100 results on '"ORANGE juice"'
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2. ESTUDO EXPERIMENTAL DA INFLUÊNCIA TÉRMICA NO TEOR DE VITAMINA C NA PASTEURIZAÇÃO DE SUCO DE LARANJA EM DOIS TIPOS DE AQUECIMENTO.
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GALIASSI, Gabriela Regina Rosa and RAMIREZ, Maribel Valverde
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HEAT transfer coefficient , *HEAT convection , *FOOD preservation , *VITAMIN C , *FOOD packaging , *ORANGE juice , *FOOD pasteurization - Abstract
Background: Heat treatment is one of the most used methods to preserve food, such as orange juice, increasing its shelf life. However, little is known about the temperature and speed profiles during heat treatment of liquid food in commercial packaging. Aim: This work aimed to determine the vitamin C content and the convective heat transfer coefficient in the pasteurization of orange juice. Methods: Two tests were performed: in test 1, the heating started with a water bath at 22 ºC and was heated to 80 ºC. In test 2, the water bath started at 80 ºC. Results and Discussion: The convective heat transfer coefficient was analyzed in the wall region, and it is higher in test 2. In both tests, the curve graphic profile follows the same literature trend. Regarding vitamin C, in test 1, there was a reduction in it. In test 2, it remained constant. Conclusions: Studying the thermal behavior of orange juice is extremely important to ensure its quality. In order to avoid this degradation and reduce its loss, it is necessary that in thermal treatments, rapid heating is carried out and that the juice has low exposure to air and heat at the time of its preparation. [ABSTRACT FROM AUTHOR]
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- 2022
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3. Fresh and pasteurized orange juice analysis by TXRF
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Thiago Elias Milani and Avacir Casanova Andrello
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Orange juice ,Pesticides ,Contamination ,Elementary concentration ,Technology (General) ,T1-995 ,Science (General) ,Q1-390 - Abstract
Orange is considered the main product of the Brazilian citrus agro-industrial complex. However, in the end of 2016, the ANVISA pointed out orange as a risky product due to contamination using pesticides in its cultivation. Therefore, in this context, an analysis of the chemical elements present in fresh and pasteurized orange juices becomes extremely relevant. Thus, this work aims to quantify the elements that are present in fresh and pasteurized orange juices, using the TXRF technique. Samples of fresh orange juice of Pêra variety were acquired in a store in the city of Londrina-PR, were analysed; three samples of oranges were purchased at a store in Itápolis, São Paulo and five more samples of Pêra orange were obtained in the rural area. Samples of pesticides used in orange cultivation were quantified, and three different trademarks of pasteurized juice were analysed. In some of the samples that were collected in Itápolis-SP market, lead (Pb) element was quantified, however its concentration was within the limit established by Brazilian legislation. The aluminium (Al) element was detected in all samples of pasteurized orange juice, showing the influence of the packaging on the elemental concentration of the juice. All pesticides quantified in this work showed a significant concentration of some micro-contaminants, but when the pesticide was diluted in deionized water, those micro-contaminants could not be quantified.
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- 2021
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4. O impasse do campesinato: a agricultura de sitiantes de bairros rurais em Limeira, São Paulo.
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Pinto, Tiago Evandro, Gemma, Sandra Francisca Bezerra, and Marandola Jr., Eduardo
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ORANGE juice , *PEASANTS , *SOCIAL structure , *GOVERNMENT policy , *ORAL history , *ORANGES - Abstract
In Brazil, since the 1960s, agriculture has undergone significant changes in the technical sphere due to adopt the productive model of modernization and the economic dimension from the consolidation of agro-industries. These transformations had an impact on peasant agriculture. This article discusses the peasant social organization and presents an analysis of the amendments relating to peasant work and agriculture, notably from sitiantes, locals of the rural neighborhoods named Córrego Bonito Delgado and Frades in Limeira, city of the state of São Paulo. Rural neighborhoods comprise peasant territorializations and, to a large extent, are constituted formed by families with close social ties that preserve a shared life. Memory was conceived as a social form elaborated by these subjects and thus we start using oral history as methodology. Therefore, it was noted that technical changes gradually absorbed as mechanization and use of chemicals as inputs and pesticides affected the work on the field, productivity and health. In addition, processes were initiated to subordinate the production of these peasants to the agro-industries of cotton, orange juice and sugarcane respectively. This changes have put in question the peasants' way of life, driving them to articulate forms of recreation and permanence through public policy. [ABSTRACT FROM AUTHOR]
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- 2021
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5. Determination of organic acids and carbohydrates in ‘Salustiana’ orange fruit from different rootstocks
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Deived Uilian de Carvalho, Maria Aparecida da Cruz, Ronan Carlos Colombo, Lycio Shinji Watanabe, Zuleide Hissano Tazima, and Carmen Silvia Vieira Janeiro Neves
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Citrus spp. ,Fruit quality ,Orange juice ,HPLC ,Organic acids ,Sugars ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Abstract This study aimed to determine carbohydrates and organic acids in fruit from ‘Salustiana’ orange tree [Citrus sinensis (L.) Osb.] grafted onto different rootstocks using the HPLC technique, as well as to evaluate their physicochemical properties. As rootstocks, we tested ‘Rangpur’ lime, ‘Cleopatra’ mandarin, ‘Sunki’ mandarin, ‘Swingle’ citrumelo, and ‘C-13’ citrange. Fully mature fruit was first characterized according to their physicochemical parameters as fruit mass, longitudinal and equatorial diameters, peel color, juice yield, soluble solids, titratable acidity, and ratio. Then, freshly squeezed juice was used to determine and to quantify organic acids and carbohydrates by the HPLC system. All analyses were performed in triplicate complete randomized with five treatments (rootstocks). Fruit from all evaluated rootstocks presented adequate physicochemical attributes, meeting the quality standards of the citrus industry. ‘C-13’ citrange induced in a production of large-sized fruit whereas ‘Rangpur’ lime promoted higher soluble solids content in its juice. Significant differences were not observed between the treatments with regards to organic acids and carbohydrates concentrations. Citric and ascorbic acids were identified and quantified in the juice samples. The sugars identified were sucrose, glucose, and fructose. Organic acids and carbohydrates concentrations are consistent with those reported in the literature for citrus juice, providing information about nutrition and quality of ‘Salustiana’ sweet orange produced onto different rootstocks.
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- 2020
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6. O ACORDO ENTRE MERCOSUL E UNIÃO EUROPEIA.
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MACHADO, IWAYR and LUPI, ANDRÉ
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COMMERCIAL treaties , *CUSTOMS unions , *INTERNATIONAL economic integration , *MONETARY unions , *ORANGE juice - Abstract
Introduction: Mercosur (Southern Common Market) is an economic bloc made up of four South American countries and its objective is to promote integration between some South American countries, especially the Southern Cone, in the economic, political and Social. On the other hand, the European Union (EU) is an economic bloc created in 1992 to establish economic and political cooperation between European countries (28 countries). It is one of the examples of the most advanced blocs, featuring economic, social and political integration, common currency, free movement of persons and the functioning of a European Parliament made up of members of the Member States, elected by the citizens. General objective: to analyze the main advantages of the Agreement between Mercosur and the European Union in 2019 in Brussels, the Netherlands. Method: The study used the consultation in works collected on physical and virtual platforms, in order to meet the objectives initially proposed, which was to analyze the main advantages of the Agreement between Mercosur and the European Union. Results: The studies allowed to reach the desired results. Conclusion: The Trade Agreement with the EU is one of the largest free trade areas in the world, because of its economic importance and the scope of its disciplines. It is the largest and most complex agreement negotiated by Mercosur. It covers tariff and regulatory issues, services, government procurement, trade facilitation, technical barriers, sanitary, phytosanitary and intellectual property measures. With the agreement in force, agricultural products of great interest in Brazil will have their tariffs eliminated, such as orange juice, fruits and instant coffee. Brazilian exporters will obtain increased access, through quotas, to meat, sugar and ethanol, among others, after approval. Brazilian companies will benefit from the elimination of export tariffs on 100% of industrial products, and the conditions of competition with other partners that have free trade agreements with the EU will be equalized. [ABSTRACT FROM AUTHOR]
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- 2020
7. INFLUÊNCIA DOS COMPOSTOS FITOQUÍMICOS DO SUCO DE LARANJA VERMELHA NA REDUÇÃO DA GORDURA ABDOMINAL.
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Cristina da Silva, Ilane and de Lima Filho, Bartolomeu Fagundes
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ABDOMINAL adipose tissue , *ORANGE juice , *LITERARY criticism , *ORANGES , *EXTRACTS - Abstract
Introduction: orange juice extract is known, but its benefits are still little discussed in the scientific environment, however, it is believed that there is a reduction of abdominal fat with its use. Objective: To review the literary findings on the effects of phytochemical compounds of red orange, especially Morosil, on the reduction of abdominal fat. Materials and methods: it is an integrative review carried out from January to June 2018. Results: 22 articles were found and 7 were included in the inclusion criteria. Two are favorable to the use of the extract of orange juice to reduce abdominal fat, while others believe that the use of this compound does not alter anthropometric data. Discussion: The articles found differed from a unique point of view. Some have shown the ineffectiveness of the compound for this purpose and others have shown that the compound is capable of decreasing measurements. Conclusion: The use of orange juice extract is still controversial, but most national and international studies believe that there is no significant effect on the reduction of abdominal fat. Nevertheless, it is necessary to elaborate studies with better methodological aggregates to conclude emphatically the studied effects. [ABSTRACT FROM AUTHOR]
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- 2020
8. O circuito produtivo de laranja na Microrregião Geográfica de Jales-SP.
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Ros Martins, Widson Tainan and Nardoque, Sedeval
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FRUIT juices , *FARM produce , *BEVERAGE industry , *ORANGE juice , *ORANGES , *FRUIT , *PEASANTS - Abstract
Brazil is the world's largest producer of orange, standing out among the main exporting countries of concentrated juice of this fruit, being the state of São Paulo the largest national producer. Under the dictates of agribusiness, orange juice became a commodity and the national production of this fruit was articulated in order to serve the interests of big capital, represented by the beverage processing industries, monopolizing the market and exercising strong control over the sector. In this context, the Geographic Microregion of Jales was inserted in the space circuit of capital linked to citriculture, although most of its orange production is sold in natura in the domestic market, understood as a strategy to "dribble" the monopoly of processing industries, especially by peasants producing orange, but not escaping to the appropriation of the income of the land by the capital present in the circulation of this commodity. Starting from such assumptions, this work aims to analyze the process of appropriation of land rent by capital in the space circuit of orange production in the Geographic Microregion of Jales. [ABSTRACT FROM AUTHOR]
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- 2020
9. Sensorial de suco de laranja com diferentes açúcares.
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Kemper Back, Patrícia Inês, Steinhaus, Jocieli, Figueiredo Ramires, Maiara, Stoll, Douglas, Castro Vasconcelos, Marlon de, and Hart Weber, Fernanda
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BROWN sugar , *ORANGE juice , *SENSORY perception , *SWEETNESS (Taste) , *HONEY , *SUGARS , *PRODUCT quality - Abstract
Brazil is the world's largest producer and exporter of orange juice. Orange juice is a complex product, formed by an aqueous "blend" of various volatile and unstable organic components, responsible for its taste and aroma, as well as sugars, acids, minerals, vitamins and pigments. However, due to the more acidic flavor characteristic of orange juice, many consumers use the use of "common" crystal sugar for their consumption, which may reduce the nutritional quality of the final product. Thus, the objective was to evaluate the acceptance of orange juice sweetened with brown sugar, honey, and refined sugar, by assessing the sensory perception of consumers. The work was developed at the State University of Rio Grande do Sul. The oranges of the Valencia variety, after selection, washing and sanitization were submitted to the juice extraction process manually, and after filtration, 4.5 liters of orange juice were collected. They were then separated into three 1.5 liter portions in three 2 liter containers each, and diluted with the addition of 0.5 liters of water and "ordinary" crystal sugar, brown sugar and honey to 14 ° Brix. The acceptance test was performed by a team of 31 untrained judges, and the orange juice was evaluated for its appearance, taste, acidity, sweetness and overall impression, using a structured hedonic scale evaluation form. Nine points. Orange juice sweetened with refined sugar was presented as the best option of the evaluators, presenting higher grades in all tested attributes. [ABSTRACT FROM AUTHOR]
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- 2019
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10. APROVEITAMENTO DO RESÍDUO INDUSTRIAL DO PROCESSAMENTO DO SUCO DE LARANJA COMO INGREDIENTE NO PROCESSAMENTO TECNOLÓGICO DE ALIMENTOS.
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DORIGAN, Jessica Regina, AZEVEDO, Letícia Fernandes, BETIM, Renata, and NUNES DA SILVA, Vera Sônia
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MANUFACTURING processes , *FLOUR , *DIETARY fiber , *NUTRITIONAL value , *ORANGE juice , *SUGAR content of food - Abstract
Brazil is one of the largest countries producer of oranges in the world, with a harvest of more than 18 million tons/year, with 70% of production being destined to the production of orange juice, with waste around 8 million tons/year. Therefore, it is important to take advantage of these wastes as an alternative to minimize environmental impact. In the first stage of this work was simulated the industrial processing of juice to obtain the residues. In the second stage, cakes were prepared with the substitution of 10% (F10) and 15% (F15) of the wheat flour for the orange residue flour (ORF). The ORF presented a high content of dietary fiber (44%), with a balanced distribution of the fiber types, being 50% soluble fiber and 50% insoluble fiber. The taste and texture of the cakes presented statistical differences (p <0.05) of the formulation F10 and F15 with lower scores than standard formulation (SF). The ORF provided the F10 and F15 formulations pleasant color and smell, without the need for addition of additives. Allowing its use as an ingredient to increase the nutritional value, as the fiber content in products processed with 25% reduction of added sugar. [ABSTRACT FROM AUTHOR]
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- 2018
11. Horticultural performance and bioactive compounds of orange cultivars gropped on 'Rangle' lemon and 'Swingle' citrumeleiro
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Martins, Rafaelly Calsavara [UNESP], Universidade Estadual Paulista (Unesp), Leonel, Sarita, and Souza, Jackson Mirellys Azevêdo
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Curva de maturação ,Suco de laranja ,Phenology ,Graus-dia ,Degree-days ,Orange juice ,Ripening curve ,Citrus senensis (Osbeck) ,Fenologia - Abstract
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No. of bitstreams: 1 martins_rc_dr_botfca.pdf: 2662533 bytes, checksum: df861cda8052a04b356037cea070c905 (MD5) Previous issue date: 2022-01-27 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) O objetivo desse estudo foi avaliar o desempenho horticultural de cultivares de laranjeiras doces enxertadas em limoeiro ‘Cravo’ e citrumeleiro ‘Swingle’, bem como avaliar os ciclos fenológicos, as curvas de maturação e caracterização físico-química dos frutos, o desenvolvimento vegetativo e produtivo das plantas e por fim, quantificar os compostos bioativos do suco de laranja ao longo do armazenamento. No capítulo I avaliou-se o comportamento da cultivar Sanguínea de Mombuca (SM) enxertada em limoeiro ‘Cravo’ (LC) e citrumeleiro ‘Swingle’ (CS), mediante as variáveis fenológicas, a curva de maturação dos frutos e o desempenho produtivo das plantas. Os tratamentos foram constituídos por duas combinações copa/porta-enxerto em delineamento em blocos ao acaso com oito repetições e duas plantas por parcela. Conclui-se nesse capítulo que as combinações SM/CS e SM/LC completam o ciclo da antese à colheita em 246 dias, com acúmulo de 3226,72 graus-dias. As melhores características de qualidade são alcançadas por volta de 240 dias após a antese para as plantas de ambas as combinações copa/porta-enxerto. Por outro lado, o limoeiro ‘Cravo’ promove melhor desempenho produtivo das plantas de ‘Sanguínea de Mombuca’. No capítulo II, foram avaliados os intervalos fenológicos, a soma térmica, os atributos de qualidade dos frutos e o desempenho vegetativo e produtivo das plantas das cultivares Rubi (Rubi), Lue Gin Gong (LGG) e Valência Delta Seedless (VDS) enxertadas em LC e CS. Os tratamentos foram constituídos por seis combinações copa/porta-enxerto em delineamento em blocos ao acaso. Concluiu-se que os porta-enxertos não interferem na duração dos ciclos e na exigência térmica das cultivares copa avaliadas, verificando-se para a Rubi ciclo de 245 dias e acúmulo térmico de 3216,85 GDs, para a LGG 402 dias e 4493,61 GDs e para a VDS 407 dias e 4545,81 GDs. Por meio do heatmap, evidenciou-se que Rubi/CS, Rubi/LC, LGG/CS e LGG/LC possuem similaridade. Quanto ao desempenho produtivo das plantas, as combinações Rubi/LC e Rubi/CS foram superiores. Já em relação aos atributos físico-químicos dos frutos, as combinações LGG/LC, LGG/CS, VDS/LC e VDS/CS foram superiores. No capítulo III, avaliou-se a degradação dos ácidos ascórbico (AA) e dehidroascórbico (DHA), bem como o conteúdo de compostos fenólicos em sucos de cultivares de laranjeira armazenados em diferentes embalagens. O delineamento experimental foi inteiramente casualizado considerado separadamente para cada cultivar. Utilizou-se esquema de parcelas subdividas no tempo, sendo os porta-enxertos, LC e CS, parcelas e o armazenamento, garrafas claras e escuras, subparcelas. Concluiu-se que no decorrer do tempo, independentemente das condições de armazenamento, boa parte dos compostos bioativos foram degradados. Para todas as combinações copa/porta-enxerto, SM/LC, SM/CS, Rubi/LC, Rubi/CS, LGG/LC, LGG/CS, VDS/LC e VDS/CS, os compostos fenólicos hesperidina, naringerina, ácido cafeico, p-cumárico e ácido trans-ferúlico apresentaram as maiores concentrações em sucos no momento da elaboração. Todas as combinações copa/porta-enxerto apresentaram concentrações ideais de AA e DHA na composição do suco. As maiores concentrações de ácido ascórbico foram encontradas nos sucos, no momento da elaboração, que foi inversamente proporcional às concentrações de ácido dehidroascórbico. The objective of this study was to evaluate the horticultural performance of sweet orange cultivars grafted on 'Rangpur' lime and 'Swingle' citrumelo, as well as to evaluate the phenological cycles, such as maturation curvatures and physicochemical characterization of the fruits, the vegetative and productive development of plants and finally, to quantify the bioactive compounds of the juice during storage. In chapter I, the behavior of the cultivar Sanguínea de Mombuca (SM) grafted on 'Rangpur' lime (LC) and 'Swingle' citrumelo (CS) was evaluated through phenological variables, fruit maturation curvature and performance. produced from plants. They consisted of two random alignment/transport blocks with two alignment/transplant plants by two sets of plants/transports constructed by two random alignment/transplant units with eight plants per set. It is concluded in this cycle that, as SM/LC, they complete the anthesis chapter at degrees 246 days with an accumulation of 3226.72. The best quality traits are achieved as best traits 240 days after construction as blueprints of both before as equivalent traits. On the other hand, it promotes the best productive performance of 'Rangpur' plants, the lemon tree, of 'Sanguínea de Mombuca'. In chapter II, the phenological intervals, the thermal sum, the fruit quality attributes and the vegetative and productive performance of the plants of the cultivars Rubi (Rubi), Lue Gin Gong (LGG) and Valencia Delta Seedless (VDS) were included in LC and CS. The design/port blocks consisted of six co-implants in a randomized design. It is concluded that the transport carriers do not interfere in the cycles and in the temperature of the cultivars copautransportes termicos, verifying the thermal duration, verifying cycle of 3245 days and of 3216485 GDs, for the LG402 days and thermal graft, 61 GDs and for the VDS 407 days and 4545.81 GDs. Through the heatmap, it was evidenced that Rubi/CS, Rubi/LC, LGG/CS and LGG/LC have similarity. As for the productive performance of the plants, the Rubi/LC and Rubi were performed. In terms of physical attributes of the fruits, such as Gchemica LGG/LC ratio, superior LGCs, VDSLC and VDS/CS. In chapter III, the degradation of phenolic and ascorbic compounds (DHA) was evaluated, as well as the content of compounds in juices of orange cultivars stored in different packages. The experimental design was completely randomized, considered separately for each cultivar. A split-plot scheme was used, with the rootstocks, LC and CS, plots and the storage, light and dark bottles, subplots. It was concluded that over time, regardless of storage conditions, most of the bioactive compounds were degraded. For all scion/rootstock combinations, SM/LC, SM/CS, Rubi/LC, Rubi/CS, LGG/LC, LGG/CS, VDS/LC and VDS/CS, the phenolic compounds hesperidin, naringerin, acid caffeic, p-coumaric and trans-ferulic acid showed the highest concentrations in juices at the time of elaboration. All scion/rootstock combinations showed ideal concentrations of AA and DHA in the juice composition. The highest concentrations of ascorbic acid were found in the juices at the time of preparation, which was inversely proportional to the concentrations of dehydroascorbic acid. 140659/2018-8
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- 2022
12. Control of fungi associated with the orange juice processing line
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Martins, Camila Siedlarczyk, 1994, Rocha, Liliana de Oliveira, 1978, Kabuki, Dirce Yorika, Braghini, Raquel, Universidade Estadual de Campinas. Faculdade de Engenharia de Alimentos, Programa de Pós-Graduação em Ciência de Alimentos, and UNIVERSIDADE ESTADUAL DE CAMPINAS
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Suco de laranja ,Sanitizantes ,Spoilage ,Yeasts ,Fungi ,Sanitizers ,Leveduras ,Orange juice ,Fungos ,Deterioração - Abstract
Orientador: Liliana de Oliveira Rocha Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos Resumo: O suco de laranja é um produto amplamente consumido no mundo, este fato se deve, principalmente, às suas características sensoriais e nutricionais, visto que possui vitamina C, minerais e carboidratos em sua composição. Devido ao pH ácido da bebida, esta torna-se susceptível à contaminação por microrganismos tolerantes a essa condição, destacando-se os fungos filamentosos e leveduras. Com relação aos fungos filamentosos, Paecilomyces e outros fungos termorresistentes são responsáveis pela deterioração do produto. De forma a minimizar os problemas causados pela contaminação por fungos, o suco de laranja pode ser submetido a diversos tratamentos, sendo estes térmicos ou não. Além disso, o emprego de sanitizantes em ambientes e equipamentos da indústria contribui para a obtenção de um produto com qualidade microbiológica. Este trabalho teve como objetivo identificar potenciais pontos de contaminação por fungos deteriorantes em linha de processamento de suco de laranja em indústria localizada no interior de São Paulo e verificar a susceptibilidade dos isolados de fungos filamentosos aos sanitizantes comumente utilizados na indústria de alimentos. Os resultados revelaram a presença de fungos em todas as coletas realizadas. Observou-se a ocorrência de espécies fúngicas distintas nos sucos antes e após a pasteurização, indicando contaminação durante o processamento e, possivelmente, a formação de biofilmes contendo leveduras e fungos filamentosos nos equipamentos. As espécies fúngicas de maior destaque na contaminação foram Paecilomyces variotii e Wickerhamomyces anomalus. Com relação à susceptibilidade aos sanitizantes, observou-se resistência de P. variotii aos produtos a base de hipoclorito de sódio e ácido peracético mais peróxido de hidrogênio, indicando potencial persistência deste fungo na linha de processamento e problemas futuros de deterioração dos sucos Abstract: Orange juice is a product widely consumed worldwide; this fact is mainly due to its sensory and nutritional characteristics, since it has vitamin C, minerals and carbohydrates in its composition. Due to the acidic pH of the beverage, it is susceptible to the contamination by microorganisms tolerant to this condition, especially filamentous fungi and yeasts. With regard to filamentous fungi, Paecilomyces and other heat-resistant fungi are may be responsible for the spoilage of the product. In order to minimize the problems caused by contamination by fungi, orange juice can be subjected to different treatments, such as thermal processes. In addition, the use of sanitizers in industrial environment and equipment contributes to obtaining a product with microbiological quality. This study aimed to identify the main origins of fungal contamination in an orange juice processing line located in the interior of São Paulo and to verify the susceptibility of isolated filamentous fungi to sanitizers commonly used in the food industry. The results revealed the presence of fungi in all samplings performed. It was observed the occurrence of different fungal species in the juices before and after pasteurization, indicating contamination during processing and, possibly, the formation of biofilms containing yeasts and filamentous fungi in the equipment. The most prominent fungal species associated with the contamination were Paecilomyces variotii, and Wickerhamomyces anomalus. Regarding the susceptibility to sanitizers, the resistance of P. variotii to products based on sodium hypochlorite and peracetic acid plus peroxide was observed, indicating potential persistence of this fungus in the processing line and future problems of juice spoilage Mestrado Ciência de Alimentos Mestra em Ciência de Alimentos CAPES 156010/2019-4
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- 2022
13. Modeling the growth/no growth interface of Alicyclobacillus acidoterrestris CRA 7152 in orange juice as a function of pH, temperature, Brix and nisin concentration
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Wilmer Luera Peña and Pilar Rodriguez de Massaguer
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predictive modeling ,Alicyclobacillus acidoterrestris ,orange juice ,nisin. ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
The growth probability of Alicyclobacillus acidoterrestris CRA 7152 in orange juice was studied in different product conditions. The microorganism response was monitored until 47 days of storage in different conditions of pH (3 to 5.8), soluble solids (11 to 19°Brix), temperature (20 to 54°C) and nisin concentration (0 to 70 IU/ml). Growth/no growth data were modeled by the polynomial logistics regression model. The concordance of the obtained model was 96.3% indicating good fitting of observed data. The results showed fast growth in the conditions 0 IU nisin/ml juice, pH 4.4 and 15ºBrix, at 35ºC. For 70 IU nisin/ml there was no growth, pH 4.4, at 37ºC, up to 47 days of storage. Simple juices (11°Brix) with pHs between 3.5 to 3.7 can keep stable and withstand abuse temperatures up to 36°C, since added in 70IU nisin/ml, extending its shelf life. With 0.05 growth probability and using the logistics model, high pH critical values can be obtained when 50 IU nisin/ml, at 25ºC, are present in the juice, however increases in temperature and decreases in soluble solids concentration make the pH critical values decrease. It is then concluded that nisin incorporation is an alternative for controlling A. acidoterrestris growth in orange juice, as well as the logistics regression model proved to be an important tool for determining the microbial response under critical values of the variables, besides predicting growth probabilities for the different studied conditions.
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- 2010
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14. Um modelo baseado em programação linear e programação de metas para análise de um sistema de produção e distribuição de suco concentrado congelado de laranja A model based on linear programming and goal programming to analyze a frozen concentrated orange juice production and distribution system
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José Renato Munhoz and Reinaldo Morabito
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programação linear ,programação de metas ,processo de mistura ,logística de distribuição ,suco de laranja ,planejamento da produção com múltiplos produtos ,estágios e períodos ,linear programming ,goal programming ,blending process ,logistics of distribution ,orange juice ,multistage ,multiproducts and multiperiods production planning ,Industrial engineering. Management engineering ,T55.4-60.8 - Abstract
Neste trabalho apresenta-se um modelo baseado em programação linear e programação de metas para apoiar decisões no processo de mistura e na distribuição de suco concentrado congelado de laranja. Explora-se a importância das decisões do processo de mistura para a análise da logística de distribuição do suco de laranja, além das decisões de transporte e armazenagem. O modelo utiliza conceitos conhecidos da literatura de problemas de mistura e planejamento da produção com múltiplos produtos, estágios e períodos, e foi resolvido por meio da linguagem de modelagem GAMS (General Algebraic Modeling System). Um estudo de caso foi realizado numa empresa de suco de laranja localizada no interior do estado de São Paulo, e os resultados preliminares obtidos são promissores.This work proposes a model based on linear programming and goal programming to support decisions in the blending process and distribution of frozen concentrated orange juice. This study explores the importance of blending decisions for the logistic analysis of the orange juice distribution, besides transportation and storage decisions. The model utilizes well-known concepts from the literature of blending problems and multistage, multiproduct and multiperiod production planning problems, and it was solved using the GAMS (General Algebraic Modeling System) programming language. A case study was developed in an orange juice industry located in São Paulo State, and the preliminary results are promising.
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- 2001
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15. Resistencia térmica de levaduras en jugo de naranja a diferentes concentraciones de sólidos solubles
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Zoraida Medina de Salcedo, Betzabé Sulbarán de Ferrer, Alexis Ferrer Ocando, and Graciela Ojeda de Rodríguez
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Tiempo de reducción decimal ,sólidos solubles ,levaduras ,jugo de naranja ,Thermal death time ,soluble solids ,yeasts ,orange juice ,Nutrition. Foods and food supply ,TX341-641 ,Biology (General) ,QH301-705.5 - Abstract
Se estudió el tiempo de reducción decimal (D) de Rhodotorula rubra (R. rubra) y Candida intermedia (C. intermedia) a diferentes concentraciones de sólidos solubles 12, 36 y 52 ºBrix, en jugo de naranja. Las temperaturas utilizadas fueron 63, 64, 65, 66 y 67 ºC. Los D obtenidos siguiendo el método de tubo de Stumbo modificado, para R. rubra fueron desde un mínimo de 3,1 seg para 36 ºBrix a 67ºC hasta un máximo de 209 seg para 52 ºBrix a 63ºC. Para C. intermedia, el D mínimo obtenido fue 3,2 seg. a 12 ºBrix a 64ºC y el máximo D obtenido fue de 6 seg a 52 ºBrix a 64ºC. Se evidenció que a medida que aumenta la concentración de sólidos solubles aumenta la resistencia térmica de las levaduras estudiadas, presentando R. rubra la mayor resistencia térmica a 52 ºBrix. C. intermedia es más osmotolerante que R. rubra pero más sensible al calor en altas concentraciones de azúcaresThermal resistance of yeasts in orange juice at different concentrations of soluble solids. Thermal decimal reduction time (D) of Rhodotorula rubra (R. rubra) and Candida intermedia (C. intermedia) at 63, 64, 65, 66 and 67ºC was studied, at soluble solids concentrations of 12, 36 and 52 ºBrix in orange juice. Experiments were conducted according to Stumbo method. D values for R. rubra were obtained in a range of 3.1 s for D 67ºC at 36 ºBrix as a minimum to 209 s at 64ºC and 52 ºBrix as a maximum. For C. intermedia, the minimum D value was 3.2 s at 64ºC and 12 ºBrix and the maximum was 6 s at 64ºC and 52 ºBrix. It can be noticed that as the concentration of soluble solids increases, the thermal resistance of the yeasts increases. R. rubra exhibits its highest thermal resistance at 52 ºBrix for all temperatures. C. intermedia shows more osmotolerancy that R. rubra but it is more sensitive to heat at high sugar concentrations
- Published
- 2001
16. AVALIAÇÃO MICROBIOLÓGICA DO SUCO DE LARANJA IN NATURA COMERCIALIZADO EM VIA PÚBLICA NA ZONA CENTRAL DE SÃO PAULO-SP.
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Ferreira Barros, Daniel, Martins Bento, Gabriella Sampaulo, Morais Nobre Scarance, Laís, Diniz de Oliveira Andrade, Vanessa, Carvalheiro Guerra Matias, Andrea, and Simioni de Abreu, Edeli
- Abstract
The aim of present study was to verify the presence of microorganisms in natural orange juice samples collected in downtown São Paulo city and compare them with the current legislation. Three samples were collected of natural orange juices from different places of sale. Analyzes were performed to identify the presence of mesophile, yeast, and coliforms, using Tryptone Soy Agar (TSA), Potato Dextrose Agar (PDA,) and presumptive and confirmative coliform tests. The values found were higher than recommended for mold, yeast, and bacteria. Fecal coliforms were not present in any samples, with the presence of 50% for the presumptive test and 33.3% in the confirmative test for total coliforms. The results indicate the need to adopt best practices in food manipulation. [ABSTRACT FROM AUTHOR]
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- 2015
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17. DETERMINANTES DO INTERESSE DOS CITRICULTORES PAULISTAS NA UTILIZAÇÃO DE CONTRATO FUTURO DE SUCO DE LARANJA NO BRASIL.
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Clemente, Felippe and Bragança Coelho, Alexandre
- Abstract
Copyright of Organizações Rurais & Agroindustriais is the property of Organizacoes Rurais & Agroindustriais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
18. Avaliação de curvas de maturação de laranjas por análise de agrupamento Evaluation of different orange maturation curves by means of cluster analysis
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Dirceu Mattos Junior, Angela Fuentes Gonzales, Jorgino Pompeu Junior, and Clóvis Parazzi
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análise de qualidade ,citros ,laranja-doce ,germoplasma ,orange juice ,quality ,citrus ,germplasm ,Agriculture (General) ,S1-972 - Abstract
Foram avaliadas curvas de maturação de frutos de 17 clones e cultivares de laranjas-doces pela análise de agrupamento. Determinou-se o °Brix e a acidez das laranjas no período de agosto a dezembro de 1995, em Cordeirópolis, SP, obtendo-se as curvas que descrevem o comportamento das variáveis ao longo do tempo. Com base no ajustamento de equações polinomiais, foram calculadas estimativas médias para °Brix e acidez aos 70, 75, 80, 85 e 90 dias após o início da coleta de frutos para análises. Com os dados padronizados, obteve-se o agrupamento pela média de grupos de pares não balanceados. Distinguiram-se quatro grupos de clones e cultivares de laranjas quanto à maturação. Um dos grupos, formado apenas pelo clone Navelência, apresentou 13,4°Brix e acidez de 0,83%, no início do período considerado, mostrando maturação precoce em relação aos outros clones e cultivares. A cultivar Pêra também formou um grupo isolado, com a razão °Brix/acidez superior a 12,0, em meados de outubro. Para o grupo formado pelas laranjas Natal, Folha Murcha, Old Bud Line, Cutter, Valência, Lue Ging Gong e Tuxpan foi revelada a segunda quinzena de novembro como a época adequada para colheita, enquanto que, o agrupamento dos clones Frost, Whits, Olinda, Late, Stone, Chaffei, Werley e Berry atingiu a mesma relação de sólidos solúveis e acidez após 40 dias.Fruit maturation of seventeen sweet orange clones and cultivars were evaluated by cluster analysis. Soluble solids (°Brix) and acidity were determined during the spring season 1995, in Cordeirópolis, SP, Brazil. Polynomial equations were determined between August and December and values for those variables were estimated 70, 75, 80, 85 and 90 days after the initial fruit sampling. The data set was standardized to perform cluster analysis regarding the Euclidean distance measure and the linkage rule as UPGMA type. Four clusters were selected in regard to fruit maturation stage. Navelência, the earliest clone, showed 13.4°Brix and 0.83% acidity in the beginning of the considered period. The Pêra cultivar, another single clone cluster, showed ratio higher than 12.0 after middle October. The Natal, Folha Murcha, Old Bud Line, Cutter, Valência, Lue Ging Gong and Tuxpan orange clones and cultivars formed a third cluster, which reached harvesting maturity during middle November, whereas, Frost, Whits, Olinda, Late, Stone, Chaffei, Werley and Berry clones reached the same stage forty days later.
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- 1999
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19. Influência da embalagem na intenção de compra do consumidor de suco de laranja industrializado
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Ceres Mattos Della Lucia, Bárbara Pereira da Silva, and Leticia da Silva Freitas
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Orange juice ,RC620-627 ,Scale (ratio) ,Nutrition. Foods and food supply ,General Engineering ,Energy Engineering and Power Technology ,TP368-456 ,Food processing and manufacture ,Test (assessment) ,Statistics ,TX341-641 ,Product (category theory) ,Nutritional diseases. Deficiency diseases ,Mathematics - Abstract
Objective: To evaluate the influence of the package on the acceptance of processed orange juice. Methods: Five juice brands were studied (A, B, C, D and E), which were evaluated in three steps: blind test, packaging test and test with information. The tests were applied in 51 judges, using 9 points hedonic scale. The results were analyzed by descriptive statistic and by Tukey's test (α = 0.05). Results: In the blind test, the brand E showed the best acceptance, differing of brands A and B. In packaging test, brands A, D and E did not differ, and the brand C showed the worst acceptance. In the test with information, the brands A, C, D and E did not differ. Conclusion: The results indicate that the package can positively or negatively influence the consumer's assessment of the product. In this study, information on the brand had a positive influence on brands A, B and C. For brands D and E, product information decreased the percentage of consumers who liked the product, indicating that these juices may be preferred when the brand interventions are eliminated. Objetivo: avaliar a influência da embalagem na aceitação de suco de laranja industrializado pelo consumidor. Método: Foram estudadas cinco marcas de suco (A, B, C, D e E), as quais foram avaliadas em três etapas de testes: teste cego, teste com embalagem e teste com informação. Os testes foram aplicados em 51 julgadores, utilizando escala hedônica de 9 pontos. Os resultados foram analisados por meio de estatística descritiva e pelo teste de Tukey (α = 0,05). Resultados: No teste cego, a marca E obteve melhor aceitação, diferindo das marcas A e B. No teste de embalagem, as marcas A, D e E não diferiram entre si, sendo a marca C a de pior aceitação. Já no teste com informação, as marcas A, C, D e E não diferiram entre si. Conclusão: Os resultados indicam que a embalagem pode influenciar positiva ou negativamente a avaliação do consumidor sobre o produto. Neste estudo, a informação sobre a marca exerceu influência positiva para as marcas A, B e C. Já para as marcas D e E, a informação sobre o produto diminuiu a porcentagem de consumidores que gostaram do produto, indicando que estes sucos podem ser preferidos quando as intervenções da marca são eliminadas.
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- 2020
20. Production of probiotic microcasules by complex coacervation associated with enzymatic harness and application in fruit juices
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Silva, Thaiane Marques da, Menezes, Cristiano Ragagnin de, Silva, Cristiane de Bona da, Colpo, Elisângela, Menezes, Maria Fernanda da Silveira Cáceres de, Ballus, Cristiano Augusto, and Lopes, Eduardo Jacob
- Subjects
Suco de laranja ,Suco de maçã ,Apple juice ,CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS [CNPQ] ,L. acidophilus ,Orange juice ,Microencapsulation ,Transglutaminase ,Microencapsulação - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES The objective of this work was to develop microcapsules containing L. acidophilus LA-02 by complex coacervation associated with crosslinking with transglutaminase to increase the viability of the probiotic culture after application in orange juice and apple juice. The microcapsules were produced with gelatin and gum arabic (1:1), with subsequent crosslinking of the microcapsules with 2.5 and 5.0 U of transglutaminase / g of gelatin, treatments 1 and 2, respectively, being produced in wet and dry forms. The following analyzes were performed for probiotics in free form and in microcapsules, without and with crosslinking. Encapsulation efficiency and morphology were evaluated in order to characterize the microcapsules. The viability of probiotics was also evaluated after exposure to simulated gastrointestinal conditions, exposed to heat treatments and during storage under different temperature conditions for 60 days. In fruit juices, only moist microcapsules were added and the concentrations of probiotics added to the juices (10 and 30%), the viability in storage in the juices for 63 days at 4°C and the pH conditions and total soluble solids of the fruit juices. The microencapsulation process associated with cross-linking with transglutaminase showed high encapsulation efficiency. The morphology was similar for microcapsules with and without crosslinking, being spherical and multinucleated, and the crosslinking influenced the average diameter of the dry microcapsules. The microcapsules showed resistance in simulated gastrointestinal conditions and in the face of heat treatment, and this resistance was increased in dry and reticulated microcapsules. Under storage, the microcapsules in the wet form offered better survival conditions for the probiotics, with the freezing temperature being the most appropriate and the effect of cross-linking with transglutaminase most evident in the refrigeration temperature. As for fruit juices, orange juice was the most adequate, providing probiotics for 63 days (8.12 log CFU mL-1) survival, in microcapsules. In apple juice, the cross-linking process associated with a concentration of 30% microcapsules was more appropriate, providing viability to probiotics for 35 days (7.68 log CFU mL-1). It was observed that the most relevant factor for the survival of the probiotics was the pH of the juices and that the variations in pH and total soluble solids of the fruit juices are related to the metabolic activity of the probiotics. Therefore, the complex coacervation associated with transglutaminase provided protection to probiotics against adverse conditions such as the gastrointestinal tract and heat treatment, as well as providing viability to probiotics under storage in fruit juices for up to 63 days at 4°C. O objetivo deste trabalho consistiu em desenvolver microcápsulas contendo L. acidophilus LA-02 por coacervação complexa associada à reticulação com transglutaminase para aumentar a viabilidade da cultura probiótica após aplicação em suco de laranja e suco de maçã. As microcápsulas foram produzidas com gelatina e goma arábica (1:1), com posterior reticulação das microcápsulas com 2,5 e 5,0 U de transglutaminase/g de gelatina, tratamentos 1 e 2, respectivamente, sendo produzidas nas formas úmida e seca. As análises a seguir foram realizadas para os probióticos na forma livre e nas microcápsulas, sem e com reticulação. Foram avaliadas a eficiência de encapsulação e a morfologia, no intuito de caracterizar as microcápsulas. Também foi avaliada a viabilidade dos probióticos após a exposição às condições gastrointestinais simuladas, em exposição a tratamentos térmicos e durante armazenamento em diferentes condições de temperatura por 60 dias. Nos sucos de frutas, somente microcápsulas úmidas foram adicionadas e foram avaliadas as concentrações de probióticos adicionados aos sucos (10 e 30%), a viabilidade em armazenamento nos sucos por 63 dias a 4°C e as condições de pH e sólidos solúveis totais dos sucos de fruta. O processo de microencapsulação associado à reticulação com transglutaminase apresentou alta eficiência de encapsulação. A morfologia foi semelhante para microcápsulas com e sem reticulação, apresentando-se esféricas e multinucleadas, sendo que a reticulação influenciou o diâmetro médio das microcápsulas secas. As microcápsulas apresentaram resistência em condições gastrointestinais simuladas e frente ao tratamento térmico, sendo essa resistência ampliada nas microcápsulas reticuladas e secas. Sob armazenamento, as microcápsulas na forma úmida ofereceram melhores condições de sobrevivência aos probióticos, sendo a temperatura de congelamento a mais adequada e o efeito da reticulação com transglutaminase mais evidente na temperatura de refrigeração. Quanto aos sucos de fruta, o suco de laranja foi o mais adequado proporcionando a sobrevivência dos probióticos por 63 dias (8,12 log UFC mL-1), nas microcápsulas. No suco de maçã, o processo de reticulação associado à concentração de 30% de microcápsulas foi mais adequado, proporcionando viabilidade aos probióticos por 35 dias (7,68 log UFC mL-1). Foi observado que o fator mais relevante para a sobrevivência dos probióticos foi o pH dos sucos e que as variações de pH e sólidos solúveis totais dos sucos de frutas está relacionada a atividade metabólica dos probióticos. Portanto, a coacervação complexa associada à transglutaminase proporcionou a proteção aos probióticos frente a condições adversas como o trato gastrointestinal e o tratamento térmico, bem como proporcionou viabilidade aos probióticos sob armazenamento em sucos de fruta por até 63 dias a 4°C.
- Published
- 2020
21. Design de baterias : aplicação de materiais naturais para microgeração de energia
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Dalarosa, Regiane and Cândido, Luis Henrique Alves
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Baterias ,Ecodesign ,Batteries ,Electrolytes ,Power microgeneration ,Energia ,Orange juice - Abstract
Os avanços tecnológicos, aliados ao aumento nos padrões de consumo de eletrônicos portáteis, têm estimulado a demanda por modelos de baterias cada vez menores e mais eficientes. No entanto, os materiais utilizados nestes dispositivos são normalmente tóxicos ou compostos por metais pesados, trazendo preocupações sobre a segurança de seu uso e descarte no meio ambiente. Neste contexto, o objetivo desta pesquisa é gerar informações técnico-científicas sobre a aplicação do suco de laranja como eletrólito no design de baterias para conversão e estocagem de energia em microescala. Para isso, foi analisado o desempenho do suco de laranja in natura atuando como eletrólito em seu estágio zero e em estágio envelhecido, tendo em vista sua origem renovável e alta disponibilidade. A metodologia utilizada possui abordagem quantitativa e foi realizada a partir do método experimental, incorporando técnicas de caracterização físico-química e eletroquímica para subsidiar a análise de desempenho elétrico dos materiais. Dentre as três variedades de frutos analisadas, a laranja Valência apresentou o melhor desempenho, com pH 3,37, condutividade elétrica mS 4,16 e potencial médio em circuito aberto de 0,9 V, em células compostas por eletrodos de zinco e cobre. Foi verificado que apesar de possuir desempenho distinto entre as variedades de frutos, o suco de laranja in natura possui potencial para atuar como eletrólito em baterias para microgeração de energia de 1,5 V, a partir da associação de 3 células em série. Experimentalmente, foi averiguado que uma microbateria de zinco-cobre composta por 3 células associadas em série e alimentada com 0,6 ml de suco, é capaz de manter um potencial nominal na faixa de 1,5 V, por pelo menos 8 horas, sob densidade de corrente constante de 10 μA. Bem como, é capaz de manter um LED ligado durante o período de 23 horas, sob corrente na faixa entre 35 mA e 55 mA. Além disso, foi verificado que o suco de laranja pode ser usado tanto em estágio zero, recém-extraído do fruto, como em estágio envelhecido, tornando possível o uso de refugos da indústria de sucos como matéria-prima para microgeração de energia. Technological advances, combined with the increase in consumption patterns of portable electronics, have stimulated the demand for increasingly smaller and more efficient battery models. However, the materials used in these devices are usually toxic or composed of heavy metals, raising concerns about the safety of their use and disposal in the environment. In this context, the objective of this research is to generate technical-scientific information on the application of orange juice as an electrolyte in the design of batteries for converting and storing energy on a microscale. For this, the performance of fresh orange juice was analyzed, acting as electrolyte in its zero stage and in its aged stage, considering its renewable origin and high availability. The methodology used has a quantitative approach and was carried out using the experimental method, incorporating physical-chemical and electrochemical characterization techniques to support the analysis of the electrical performance of the materials. Among the three fruit varieties analyzed, the Valencia orange showed the best performance, with pH 3.37, electrical conductivity mS 4.16 and average potential in an open circuit of 0.9 V, in cells composed of zinc and copper electrodes. It was found that despite having a distinct performance between fruit varieties, fresh orange juice has the potential to act as an electrolyte in batteries for 1.5 V energy microgeneration, based on the association of 3 cells in series. Experimentally, it was found that a zinc-copper micro-battery composed of 3 cells associated in series and fed with 0.6 ml of juice, is capable of maintaining a nominal potential in the range of 1.5 V, for at least 8 hours, under constant current of 10 μA. As well as, it is able to keep an LED on for the period of 23 hours, under current in the range between 35 mA and 55 mA. In addition, it was found that orange juice can be used both in zero stage, freshly extracted from the fruit, as well as in an aged stage, making it possible to use waste from the juice industry as a raw material for microgeneration of energy.
- Published
- 2020
22. Variação de matéria seca e de nutrientes nas folhas e nos frutos, produção de ácido ascórbico e suco, em seis cultivares de citros, durante um ciclo Six citrus cultivars comparatively evaluated as to their fruit and leaf dry weights and nutrient concentrations
- Author
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H.P. Haag, L.E. Gutierrez, A.R. Dechen, F.A.A. Mourão Filho, and C.S. Moreira
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T. Cravo ,L. Hamlin ,T. Murcott ,L. Natal ,L. Valencia ,L. Pera ,extração de nutrientes ,ácido ascórbico ,suco ,Cravo orange ,Hamlin orange ,Murcott tangerine ,Natal orange ,Valencia orange ,Pera orange ,nutrient extraction ,ascorbic acid ,orange juice ,Agriculture (General) ,S1-972 - Abstract
De uma plantação de citros, com os cultivares T. Cravo (Citrus reticulata Blanco), L.Hamlin (Citrus sinensis (L.) Osbeck), T. Murcott (Citrus reticulata Blanco x Citrus sinensis (L.) Osbeck), L. Natal (Citrus sinensis (L.) Osbeck, L. Valencia (Citrus sinensis (L.) Osbeck) e L. Pera (Citrus sinensis (L.) Osbeck), situada na "Fazenda Sete Lagoas", no município de Mogi-Guaçu (22° 22% 46° 56'W.Gr.), em Latossolo Vermelho amarelo, fase arenosa, foram coletados frutos 30 dias após florescimento, até a idade da coleta comercial. No material coletado, foram determinadas a variação da matéria seca, a concentração dos macro e micronutrientes nas folhas adjacentes ao fruto, a extração de macro e micronutríentes pelos frutos, a produção de suco (ml) por fruto e a concentração de ácido ascórbico (mg/100 ml de suco). Concluiu-se que: 1. O aumento da matéria seca, intensifica-se a partir do segundo mês apos o florescimento; 2. Com exceção da T. Cravo, ocorre uma diminuição na produção de matéria seca no final do ciclo; 3. A concentração dos macro e micronutrientes nas folhas apresenta oscilações durante o desenvolvimento do fruto; 4. A ordem decrescente de extração de nutrientes é: K, N, Ca, Mg, P = S, Fe, B, Zn, Mn, Cu; 5. A capacidade de exportação de nutrientes pelos cultivares é, em ordem decrescente: L. Pera, L. Hamlin = T. Cravo, T. Murcott, L. Valencia, L. Natal; 6. A quantidade de suco produzido por fruto, oscila entre 43 a 95 ml; 7. A concentração de ácido ascórbico (mg/100 ml de suco), varia entre 30 a 95.The experiment was carried out in a commercial citrus orchard located in Mogi-Guaçu (22° 22'S., 46° 56'WGr.), State of São Paulo, Brazil. Five orange types were studied: Cravo (Citrus reticulata Blanco); Hamlin (Citrus sinensis (L.) Osbeck); Natal (Citrus sinensis (L.) Osbeck); Valencia (Citrus sinensis (L.) Osbeck) and Pera (Citrus sinensis (L.) Osbeck) and a tangerine Murcott (Citrus reticulata Blanco x Citrus sinensis (L.) Osbeck). Fruits were picked from 30 days after flowering to the peak of commercial harvest. Leaves nearest the fruits were collected at the same time as the fruits. Sampled material was used to determine: fruit dry weight, macronutrient and micronutrient concentration in the leaves, nutrient extraction by the fruits, juice production per fruit and ascorbic acid concentration in the juice. Fruit dry weight increased following the second month after flowering. Except for Cravo orange fruit dry weight decreased at the end of the cycle. Macronutrient and micronutrient concentrations in the leaves showed variations during fruit development. Rate of nutrient extraction in decreasing order was: K, N, Ca, Mg, P = S, Fe, B, Zn, Mn and Cu. The cultivar that exported the largest amount of nutrients was Pera followed by Hamlin = Cravo, Murcott, Valencia and Natal. Juice per fruit ranged between 43 and 95 mililiters whereas ascorbic acid concentration ranged between 30 and 95 miligrams per 100 mililiters of juice.
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- 1993
- Full Text
- View/download PDF
23. INFLUÊNCIA DA INGESTÃO DO SUCO DE LARANJA SOBRE O ESTADO NUTRICIONAL E DIETÉTICO EM PACIENTES COM HEPATITE C CRÔNICA.
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MANJATE, Delfina Alfredo, Martiniano NASSER, Ana Lúcia, and CÉSAR, Thaïs Borges
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HEPATITIS C virus ,CIRRHOSIS of the liver ,LIVER cancer patients ,INGESTION disorders ,CHRONIC hepatitis C ,THERAPEUTIC use of vitamin C ,ORANGE juice - Abstract
Copyright of Brazilian Journal of Food & Nutrition / Alimentos e Nutrição is the property of Faculdade de Ciencias Farmaceuticas, UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
24. Caracterização Analítica de Sucos e Néctares de Laranja Adoçados com Sacarose e Edulcorantes.
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Faria VIANNA, Lídia M. F., NUCCI, Mariana, Botelho do AMARAL, Flávia L., BASTING, Roberta Tarkany, Gomes FRANÇA, Fabiana M., and Pedroso TURSS, Cecilia
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TOOTH erosion ,ORANGE juice ,SUCROSE ,REFRACTOMETERS ,NECTAR ,MINERAL waters - Abstract
Copyright of Pesquisa Brasileira em Odontopediatria e Clinica Integrada is the property of Pesquisa Brasileira em Odontopediatria e Clinica Integrada Journal (Brazil) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
- Full Text
- View/download PDF
25. AVALIAÇÃO MICROBIOLÓGICA E DAS CONDIÇÕES HIGIÊNICO-SANITÁRIAS DE COMERCIALIZAÇÃO DE SUCOS DE LARANJA IN NATURA.
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Rippel SILVEIRA, Márcia Liliane and Michelin BERTAGNOLLI, Silvana Maria
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ORANGE juice ,LACTIC acid bacteria ,MOLDS (Fungi) ,ENTEROBACTERIACEAE ,FOOD microbiology - Abstract
Copyright of Brazilian Journal of Food & Nutrition / Alimentos e Nutrição is the property of Faculdade de Ciencias Farmaceuticas, UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
26. Exportações Brasileiras de Suco de Laranja e Subsídios Americanos: uma análise empírica de estratégias comerciais (1991-2006).
- Author
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Favoretto Costa, Cássia Kely, Maia, Sinézio Fernandes, and Bezerra Sampaio, Luciano Menezes
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INTERNATIONAL markets ,ORANGE juice ,SUBSIDIES ,INTERNATIONAL trade ,FINANCIAL liberalization ,AGRICULTURAL industries - Abstract
Copyright of Revista de Economia e Sociologia Rural is the property of Sociedade Brasileira de Economia e Sociologia Rural and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2012
- Full Text
- View/download PDF
27. A Emergência dos Conselhos Setoriais na Agroindústria Brasileira: gênese de uma governança mais ampla?
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Belik, Walter, Paulillo, Luiz Fernando, and de Freitas Vian, Carlos Eduardo
- Subjects
RURAL development ,ECONOMIC sociology ,INSTITUTIONAL economics ,SUGARCANE ,ORANGE juice ,AGRICULTURAL economics - Abstract
Copyright of Revista de Economia e Sociologia Rural is the property of Sociedade Brasileira de Economia e Sociologia Rural and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
- Full Text
- View/download PDF
28. DETECÇÃO E IDENTIFICAÇÃO DE LEVEDURAS EM SUCOS DE LARANJA NATURAL COMERCIALIZADOS.
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Soares, Urias Junior de Oliveira, de Souza, Gerusa Rios, Barbosa, Amir Horiquini, Martins, Carlos Henrique Gomes, and Pires, Regina Helena
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YEAST ,ORANGE juice ,PRODUCT quality ,SANITATION ,IMMUNODEFICIENCY - Abstract
Copyright of Brazilian Journal of Food & Nutrition / Alimentos e Nutrição is the property of Faculdade de Ciencias Farmaceuticas, UNESP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2011
29. Orange juice combined to a healthy eating pattern improved endothelial function and reduced cardiovascular risk in patients with metabolic syndrome: randomized clinical trial
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Oliveira, Renata Benassi de, Universidade Estadual Paulista (Unesp), and Cesar, Thais Borges
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cardiovascular risk ,risco cardiovascular ,dieta ,orange juice ,suco de laranja ,síndrome metabólica ,função endotelial vascular ,metabolic syndrome - Abstract
Submitted by Renata Benassi de Oliveira (rebenassi@hotmail.com) on 2019-03-25T16:16:13Z No. of bitstreams: 2 Tese Renata Benassi parcial.pdf: 963973 bytes, checksum: 0c33273ff055a863de9cc0b32b0e9555 (MD5) Tese Renata Benassi .pdf: 1408122 bytes, checksum: 036ddb3feb396988d6f6988fdef1a513 (MD5) Approved for entry into archive by Maria Irani Coito (irani@fcfar.unesp.br) on 2019-03-26T00:23:38Z (GMT) No. of bitstreams: 1 ribeiro_cb_dr_arafcf_par.pdf: 801190 bytes, checksum: e9ae5b422ed4abe4ce4e1e5ebb243718 (MD5) Made available in DSpace on 2019-03-26T00:23:38Z (GMT). No. of bitstreams: 1 ribeiro_cb_dr_arafcf_par.pdf: 801190 bytes, checksum: e9ae5b422ed4abe4ce4e1e5ebb243718 (MD5) Previous issue date: 2019-03-15 Objetivos: Investigar o efeito da associação entre um padrão saudável alimentar e a ingestão regular do suco de laranja sobre a função endotelial vascular e parâmetros clínico-nutricionais em indivíduos com síndrome metabólica. Material e Métodos: Estudo clínico randomizado de grupos paralelos, com intervenção dietética de curto prazo. A idade média foi de 48±9 anos, sendo 69% mulheres e 31% homens. Os voluntários foram alocados randomicamente nos grupos: Controle (n=34) e Suco de Laranja (n=34), sendo que todos receberam orientação nutricional para uma dieta saudável. Os indivíduos do grupo Suco de Laranja receberam concomitantemente à dieta 500 mL/dia de suco de laranja 100%. Ao longo de 12 semanas foram realizadas: (1) avaliação antropométrica, (2) avaliação dietética, (3) avaliação bioquímica, (4) avaliação da função endotelial vascular, e (5) risco cardiovascular global. Resultados: Após as 12 semanas de intervenção dietética e suco de laranja foram detectadas para ambos os grupos uma redução média significativa de 2% no peso corporal, 3% no IMC, 5% na massa gorda, 6% na circunferência da cintura e 4% na gordura visceral, sem contudo alterar a massa magra. No grupo Controle foi detectada redução significativa no HDL-C (-10%). Os parâmetros da função endotelial vascular mostraram redução média para ambos os grupos da pressão arterial sistólica e diastólica (-8% e -9%, respectivamente), e melhorias na função endotelial vascular. Além disso, houve redução do risco cardiovascular em ambos os grupos, sugerindo benefícios da orientação dietética e do consumo regular do suco de laranja. Objectives: To investigate the effect of the association between healthy food standard and the regular intake of orange juice on vascular endothelial function and clinical and nutritional parameters in individuals with metabolic syndrome. Material and Methods: Randomized clinical study of parallel groups with short-term dietary intervention. The mean age was 48 ± 9 years, of which 69% were women and 31% were men. The volunteers were allocated randomly in the control groups (n = 34) and Orange juice (n = 34), all of whom received nutritional guidance for a healthy diet. The subjects in the Orange Juice group received concomitantly 500 ml / day of orange juice 100%. During 12 weeks, the following results were performed: (1) anthropometric evaluation, (2) dietary assessment, (3) biochemical evaluation, (4) evaluation of vascular endothelial function, and (5) global cardiovascular risk. Results: After 12 weeks of dietary intervention and orange juice, a significant mean reduction of 2% in body weight, 3% in BMI, 5% in fat mass, 6% in waist circumference and 4% in visceral fat, without altering the lean mass. In the Control group, significant reductions were detected in HDL-C (-10%). Vascular endothelial function parameters showed a mean reduction for both systolic and diastolic blood pressure groups (-8% and -9%, respectively), and improvements in vascular endothelial function. In addition, there was a reduction in cardiovascular risk in both groups, suggesting benefits of dietary guidance and regular consumption of orange juice.
- Published
- 2019
30. Determination of carbendazim in orange juice, employing extraction at disposable tip of micropipette with sorbent prepared in laboratory
- Author
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Aguiar Júnior, Carlos Augusto Santos, Faria, Anizio Marcio de, Muñoz , Rodrigo Alejandro Abarza, and Goulart, Simone Machado
- Subjects
Suco de laranja ,CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICA::SEPARACAO [CNPQ] ,Defensivos vegetais ,Extração (Química) ,Carbendazim ,Química ,Orange juice ,DPX method ,Si(PGPMS) sorbent ,HPLC-DAD - Abstract
FAPEMIG - Fundação de Amparo a Pesquisa do Estado de Minas Gerais O carbendazim é fungicida benzimidazólico com alta estabilidade no ambiente e muito empregado no controle de fungos, tendo sido destaque negativo mundial no início desta década por ser encontrado em altas taxas em laranjas brasileiras. Devido às características de polaridade do carbendazim, sua extração exige procedimentos com misturas de sorventes polares e apolares, tornando o processo mais dispendioso e complexo. Neste sentido, buscouse desenvolver neste trabalho um sorvente com seletividade ao carbendazim a partir da imobilização térmica de poli(glicidoxipropilmetil-co-dimetilsiloxano) (PGPMS) sobre sílica. O sorvente foi caracterizado morfológica e estruturalmente, apresentando-se como partículas irregulares mesoporosas de elevada área superficial, 250 m2 g-1, alta estabilidade térmica e revestidas com uma camada polimérica fina de PGPMS. O Si(PGPMS) foi empregado como sorvente para a extração de carbendazim em suco de laranja na ponteira descartável de micropipeta (DPX). As condições de extração do carbendazim em suco de laranja pelo método DPX com o sorvente Si(PGPMS) foram otimizadas, empregando um planejamento composto central. As análises dos extratos foram realizadas por cromatografia líquida de alta eficiência e detecção por arranjo de diodos (CLAE-DAD). O método DPX CLAE-DAD para a determinação do carbendazim em suco de laranja foi validado em conformidade ao documento SANTE/11813/2017, protocolo empregado pela comunidade europeia, apresentando-se como um método de boa exatidão (recuperações entre 98-112 %), boa precisão (RSD < 16 %) e com limite de quantificação de 100 µg L-1 (abaixo do limite máximo residual para o carbendazim em laranjas). O método DPX foi empregado a amostras comerciais de suco de laranja para a determinação de carbendazim, não sendo detectada a presença de resíduos do agrotóxico. As amostras foram então fortificadas com padrão de carbendazim e o método DPX foi empregado para recuperação do agrotóxico, alcançando taxas de 93 a 108 %, sem efeitos matriz, resultados que foram comparáveis a um método de referência baseado na extração QuEChERS com taxas de recuperação 77 a 99 %. De uma forma geral, pode-se concluir que o sorvente preparado no laboratório foi eficaz na extração DPX de carbendazim de suco de laranja, apresentando alta seletividade, comprovada pela extração em ciclo único no método DPX. Além disso, o método é simples e rápido, emprega volumes pequenos de amostra e solvente, pequena quantidade de sorvente para a determinação eficiente de carbendazim. Carbendazim is a benzimidazole fungicide with high stability in the environment and very used in the fungi control, having been negative global prominence at the beginning of this decade because it was found at high rates in Brazilian oranges. Due to the carbendazim polarity, its extraction requires procedures with mixtures of polar and nonpolar sorbents, making the process more expensive, poor selective and complex. In this sense, we have developed a new sorbent selective to carbendazim based on the thermal immobilization of poly(glycidoxypropylmethyl-co-dimethylsiloxane) (PGPMS) onto irregular silica particles. The sorbent was characterized morphologically and structurally, presenting as mesoporous irregular particles with high surface area, 250 m2 g-1, high thermal stability and coated by a thin polymeric layer of PGPMS. Si(PGPMS) was used as sorbent for the carbendazim extraction from orange juices into the disposable micropipette tip (DPX). The extraction conditions of carbendazim from orange juices by the DPX method with the sorbent Si(PGPMS) were optimized, using a central composite design. The sample extracts were quantified by high-performance liquid chromatography and diode array detection (HPLCDAD). The DPX HPLC-DAD method for the determination of carbendazim in orange juice was validated according to the SANTE/11813/2017 document, protocol used by the European community, presenting as a method of good accuracy (recoveries between 98- 112 %), good precision (RSD < 16%) and limit of quantification of 100 μg L-1 (below the maximum residue limit for carbendazim in oranges). The DPX method was used in commercial orange juice samples for the determination of carbendazim, and the presence of pesticide residues was not detected. The samples were then fortified with carbendazim standard solution and the DPX method was used for the pesticide recovery, reaching rates of 93 to 108 %, without matrix effects, results that were comparable to a reference method based on QuEChERS extraction recovery rates 77 to 99 %. Summarizing, it can be concluded that the lab-made sorbent was effective in the DPX extraction of carbendazim in orange juice samples, presenting high selectivity, proved by the single extraction cycle in DPX method. In addition, the method is simple and fast, employing small volumes of sample and solvent, small amount of sorbent for the efficient determination of carbendazim. Dissertação (Mestrado)
- Published
- 2019
31. Integração vertical parcial no sistema agroindustrial citrícola instrumento de barganha ou de eficiência?
- Author
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Paulo Furquim de Azevedo
- Subjects
vertical integration ,transaction costs ,orange juice ,bargaining ,Economic history and conditions ,HC10-1085 ,Economics as a science ,HB71-74 - Abstract
The Brazilian orange juice sector presents a partial and upstream vertical integration, i. e., firms produce part of the inputs (oranges) they need. The literature, although offering a variety of possible causes for this phenomenon, unanimously recognizes it as an efficient organizational form. This paper submits that the observed vertical integration plays a strategic role in the bargaining between orange producers and orange juice firms. It is argued that there is an incentive to adopt this organizational form even if it is not efficient. Finally, the Brazilian antitrust agency (CADE) recent analysis of this subject is appraised.
- Published
- 1997
32. EFEITOS DO TRATAMENTO COMBINADO DE IRRADIAÇÃO GAMA E REFRIGERAÇÃO NO CRESCIMENTO DE LEVEDURA (Saccharomyces cerevisiae Hansen) EM SUCO DE LARANJA
- Author
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R.E DOMARCO, M.H.F SPOTO, J.M.M WALDER, L BLUMER, and C MATRAIA
- Subjects
irradiação ,suco de laranja ,Saccharomyces cerevisiae ,irradiation ,orange juice ,Agriculture (General) ,S1-972 - Abstract
O efeito da radiação gama e baixas temperaturas foi estudado no crescimento de Saccharomyces cerevisiae em suco de laranja. O suco concentrado de laranja (65°Brix) foi diluído a 10,5°Brix e inoculado com levedura comercial. As amostras foram irradiadas com doses de 1,0, 1,5, 2,0, 2,5, 5,0 e 7,5 kGy (Cobalto 60), a uma taxa de dose de 2,83 kGy/h. Todas as amostras foram armazenadas a 0°, 5° e 25°C, por 1, 7, 14, 21, 30, 60 e 90 dias. O tratamento combinado de 1 kGy e refrigeração a 0°C foi efetivo para a conservação do suco de laranja por 90 dias de armazenamento. A dose de 2,5 kGy foi suficiente para conservar o suco de laranja por 90 dias de armazenamento a 5°C. A 25°C, somente as doses mais altas (5 e 7,5 kGy) foram efetivas no controle do crescimento da levedura no suco de laranja.The effect of gamma radiation and of low temperatures was studied on yeast growth in orange juice. Concentrated orange juice (65° Brix) was diluted to 10,5° Brix and inoculated with comercial biological yeasts. The samples were irradiated with doses of 0.0 (control), 1.0, 1.5, 2.0, 2.5, 5.0 and 7.5 kGy (Cobalt-60), with a 2.83 kGy/h dose rate. All the samples were stored at 0°, 5° and 25°C for periods of 1; 7; 14; 21; 30; 60 and 90 days of storage. Combined treatment of 1 kGy and refrigeration at 0°C was effective for orange juice conservation for 90 days of storage. The dose of 2.5 kGy, was sufficient to conserve the juice for 90 days of storage at 5°C. At 25°C only the two highest radiation doses (5.0 and 7.5 kGy) were effective to control yeast growth in orange juice.
- Published
- 1996
- Full Text
- View/download PDF
33. DETERMINACIÓN DE LOS PARÁMETROS CINÉTICOS DE DEGRADACIÓN DE LA VITAMINA C EN SUCO DE NARANJA
- Author
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Fonseca, Nayara Carla and Petean, Paula Garcia da costa
- Subjects
Jugo de naranja ,Vitamina C ,Cinética de degradación ,Suco de laranja ,Cinética de degradação ,Orange juice ,Vitamin C ,Degradation kinetics - Abstract
Vitamin C is extremely important it a potent antioxidant, prevents premature aging, fights infections, and even helps iron absorption. The amount in the food indicates the nutritional quality and the state of conservation of the same. The aim of this study was to determine the kinetics of degradation of vitamin C in orange juice. The rate of degradation of ascorbic acid was temperature dependent and the mean activation energy was 45 kJ.mol-1. La vitamina C es extremadamente importante por ser un potente antioxidante, evita el envejecimiento precoz, combate las infecciones, y ayuda a absorber el hierro. La cantidad en alimentos indica la calidad nutricional y el estado de conservación de los mismos. El objetivo de este estudio fue determinar la cinética de degradación de la vitamina C en jugos de naranja. La velocidad de degradación del ácido ascórbico fue dependiente de la temperatura y la energía de activación media fue de 45 kJ.mol-1. A vitamina C é extremamente importante por ser um potente antioxidante, evita o envelhecimento precoce, combate infecções, e ainda ajuda na absorção do ferro. A sua quantidade nos alimentos indica a qualidade nutricional e o estado de conservação dos mesmos. Buscou-se nesse estudo determinar a cinética de degradação da vitamina C em sucos de laranja. A velocidade de degradação do ácido ascórbico foi dependente da temperatura e a energia de ativação média foi de 45 kJ.mol–1
- Published
- 2018
34. Análise da sazonalidade e regionalidade em suco de laranja natural por ressonância magnética nuclear (RMN) e quimiometria
- Author
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Oliveira, Clayton Rodrigues de and Ferreira, Antonio Gilberto
- Subjects
Quimiometria ,Suco de laranja ,Ressonância magnética nuclear ,QUIMICA::QUIMICA ORGANICA::QUIMICA DOS PRODUTOS NATURAIS [CIENCIAS EXATAS E DA TERRA] ,Orange juice ,Chemometrics ,Nuclear magnetic resonance - Abstract
Não recebi financiamento The Nuclear Magnetic Resonance (NMR) has been become increasingly helpful as an analytical tool to assess the food quality, specially to highlight fruit juice in the last few years. In this context, NMR has presented solutions to identify frauds such as addition of unauthorized or not allowed compounds in fruit juices, wines, honeys, spirits, coffees, olive oil, etc.. The development of databases is used for this purpose which enables to perform at the same time the quantification of large numbers of compounds into the samples, as well as to provide the information about origin, variety and type of fruit that were used throughout orange juice production. The purpose of this study was to evaluate the seasonality and regionality in fresh orange juice used to produce concentrated orange juice for exportation through the orange varieties hamlin, pera, natal, and valência (Citrus sinensis (L.) Osbeck). 1H NMR and 2D analysis enabled us to characterize more than 20 compounds in fresh orange juice, and also to quantify the content of sugars (sucrose, α and β-glucose, and fructose), acids (citric, malic, ascorbic, succinic, and γ-aminobutyric (GABA)), aminoacids (proline, arginine, alanine, threonine, and valine), ratio and ethanol. The seasonality effects were evaluated by using principal components analysis (PCA), where it was possible to determine that region 3 showed more explicity defined seasonality stages for the varieties pera, natal and valência across the 2014 harvest. In contrast, the hamlin type presented more defined seasonality stages in region 2 for 2014´s harvest. The 1H NMR allied to supervised analysis of Partial Least Squares Discriminant Analysis (PLS-DA) lead to development of models where it was possible to distinguish the year of harvest, type of orange (early or late), type of variety (hamlin, pera, natal or valência) and the region (1, 2 or 3) where the orange juice was obtained. Nos últimos anos a Ressonância Magnética Nuclear (RMN) vem se tornando uma ferramenta analítica cada vez mais útil para avaliar a qualidade de alimentos, em especial suco de frutas. Neste contexto, a RMN tem apresentado soluções para identificar fraudes como à adição de substâncias indevidas ou não permitidas em suco de frutas, vinhos, méis, cachaça, café, azeite de oliva, etc.. A construção de bancos de dados é usada com este proposito, a qual permite quantificar simultaneamente uma grande quantidade de substâncias presente nas amostras, além de fornecer informações sobre origem, variedade e tipo de fruta utilizada na produção de um suco. O objetivo desse trabalho foi avaliar a sazonalidade e regionalidade em suco de laranja integral usado para produção de suco concentrado destinado à exportação, através das variedades de laranja hamlin, pera, natal e valência (Citrus sinensis (L.) Osbeck). As técnicas de RMN de 1H e 2D nos permitiu caracterizar mais de 20 metabólitos presentes no suco de laranja integral, além de quantificar o conteúdo de açúcares (sacarose, α e β-glicose e frutose), ácidos (cítrico, málico, ascórbico, succínico e γ-aminobutírico (GABA)); aminoácidos (prolina, arginina, alanina, treonina e valina), ratio e etanol. Os efeitos da sazonalidade foram avaliados através das análises por componentes principais (PCA), onde foi possível constatar que a região 3 foi aquela que apresentou os períodos sazonais mais bem definidos ao longo das safras 2014 para as variedades pera, natal e valência. Ao contrario das demais variedades, a variedade hamlin teve os períodos sazonais mais bem definidos na região 2 ao longo da safra de 2014. Os dados de RMN de 1H aliados às análises supervisionadas de Partial Least Squares Discriminant Analysis (PLS-DA) possibilitaram construir modelos onde foi possível distinguir o ano da safra, o tipo de laranja (precoce ou tardia), tipo de variedade (hamlin, pera, natal ou valência) e a região (1, 2 ou 3) de onde o suco de laranja foi obtido.
- Published
- 2017
35. Atividade antibacteriana das enzimas papaína e bromelina livres e encapsuladas contra Alicyclobacillus spp
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Szczerepa, Márcia Maria dos Anjos, Benício Alves de Abreu Filho, Benedito Prado Dias Filho, Rosane Marina Peralta, Paula Aline Zanetti, and Fernanda Vitória Leimann
- Subjects
Suco de laranja ,Brasil ,Alicyclobacillus ,Polymers ,Bioconservantes ,Ciência e Tecnologia de Alimentos ,Ciências Agrárias ,Polimeros ,Microbiologia de alimentos ,Atividade antimicrobiana ,Papain ,Orange juice ,Papaína e bromelina ,Bromelain ,Brazil ,Biopreservative - Abstract
Alicyclobacillus spp. are Gram-positive, thermophilic, acidophilic, non-pathogenic micro-organisms that have the ability to form spores. They are present in soil and are often related to the deterioration of acidic products among them citrus juices and beverages, such as orange juice. Heat treatments, such as pasteurization, are used in the orange juice concentrate industry to inactivate pathogenic and spoilage micro-organisms. However, the spore of Alicyclobacillus acidoterrestris can survive such heat treatment, germinate, grow and thus cause the juice to deteriorate after reconstitution. Research is currently focused on the application of natural antimicrobial agents to foods as they provide a potential pathway for inhibiting a wide variety of microorganisms without risk to consumer health. Papain and Bromelain are two enzymes extracted from papaya (Carica papaya) and pineapple (Ananas comosus) respectively, where several studies characterize its antimicrobial effects, however these enzymes have not been evaluated against the genus Alicyclobacillus to date. Because they are two proteolytic enzymes, such compounds may undergo denaturation when subjected to the heat treatment employed, for example, in the pasteurization of orange juice. Microencapsulation is a technology that allows the fine coating of solid particles in order to overcome limitations in the use of ingredients, such as attenuating undesirable flavors, reducing volatility and reactivity as well as increasing the stability of these solid particles under adverse conditions. Spray drying is a viable method for the preparation of microparticles and the use of natural biopolymers as an encapsulating material makes their application possible in food products. To evaluate the antibacterial activity of the enzymes papain and bromelain against Alicyclobacillus spp., focusing on the A. acidoterrestris species and to microencapsulate these enzymes with alginate and chitosan to verify its effectiveness in the protection of the antibacterial activity after being submitted to the heat treatment.The determination of minimum inhibitory and bactericidal concentration (MIC and MBC) for papain and bromelain against Alicyclobacillus strains was performed. The time course of death of the microorganism was determined in the presence and absence of the enzymes and investigated the enzymatic activity as a mechanism of action on the microorganism through enzyme inhibitor and denaturation assays. The antibacterial activity of the enzymes was also evaluated in combination with nisin. The microencapsulation of the enzymes was performed by spray drying using alginate and chitosan as encapsulating material, after which the compounds were submitted to thermal treatment and after their inhibitory and bactericidal activity was evaluated against five different species of Alicyclobacillus. Microcapsules were characterized by Scanning Electron Microscopy (SEM), Differential Scanning Calorimetry (DSC) and Infrared Spectroscopy (FT-IR). The results showed that for the A. acidoterrestris strain, the MIC of papain was 0.98 μg/mL and the MBC was 3.91μg/mL, while the MIC of bromelain was 62.5 μg/mL and the MBC was 250 μg/mL. The concentration of 4XMIC for both the enzymes was sufficient to eliminate 4 logs of the micro-organism after 24 hours of incubation. Through the use of enzyme inhibitors specific for cysteine proteases, it was found that the antibacterial activity of papain and bromelain is not related to its proteolytic activity, but may be related to other activities, such as amidase and esterase. The synergistic activity of the enzymes revealed an fractional inhibitory concentration (FIC) level of 0.16. Combination with nisin revealed an FIC of 0.25 for papain and 0.19 for bromelain, indicating synergism between both compounds. Microencapsulation of the particles with alginate and chitosan was evidenced through the physical analysis. The results showed that papain microencapsulated with chitosan or alginate maintained low MIC values after submission to heat treatment, demonstrating its effectiveness and potential application as a biopreservative. The application of the enzymes in reconstituted orange juice contaminated with A. acidoterrestris proved to be effective, since after 48 h of incubation at three different temperatures, the initial microbial population was eliminated. Therefore, papain and bromelain are enzymes with antibacterial action in A. acidoterrestris. The microencapsulation technique was effective in protecting the antibacterial activity of papain, characterizing this compound with great potential of application as a bioconservant in acidic products, being necessary more studies on stability and sensorial characteristics when applied to the food. Alicyclobacillus spp. são micro-organismos em forma de bacilos, Gram-positivos, térmófilos, acidófilos, não patogênicos e com a capacidade de formar esporos. Eles estão presentes no solo e são frequentemente relacionados a deterioração de produtos ácidos, entre eles bebidas e sucos cítricos, como o suco de laranja. Tratamentos térmicos são empregados na indústria de suco de laranja concentrado para inativar uma grande quantidade de micro-organismos patógenos e deteriorantes, no entanto, o esporo de Alicyclobacillus acidoterrestris pode sobreviver a estes tratamentos térmicos, germinar, crescer e assim deteriorar o suco após a sua reconstituição. Atualmente as pesquisas estão voltadas para a aplicação de agentes antimicrobianos naturais nos alimentos, pois proporcionam uma via potencial para inibir uma vasta variedade de micro-organismos, sem risco para a saúde dos consumidores. Papaína e Bromelina são duas enzimas extraídas, respectivamente, do mamão (Carica papaya) e do abacaxi (Ananas comosus), onde diversos estudos caracterizam os seus efeitos antimicrobianos, no entanto essas, até o o momento, não foram avaliadas frente ao gênero Alicyclobacillus. Por se tratar de duas enzimas proteolíticas, esses compostos podem sofrer desnaturação quando submetidos ao tratamento térmico empregado, por exemplo, na pasteurização do suco de laranja. A microencapsulação é uma tecnologia que permite o revestimento fino de partículas sólidas com o objetivo de solucionar limitações no emprego de ingredientes, como por exemplo, atenuar flavors indesejáveis, reduzir a volatilidade e reatividade assim como aumentar a estabilidade dessas partículas sólidas em condições adversas. A secagem por pulverização (spray dryer) é um método viável para a preparação de micropartículas e a utilização de biopolímeros naturais como material encapsulante torna viável sua aplicação em produtos alimentícios. Avaliar a atividade antibacteriana das enzimas papaína e bromelina em Alicyclobacillus spp., com foco na espécie A. acidoterrestris e microencapsular essas enzimas com alginato e quitosana para verificar a sua eficácia na proteção da atividade antibacteriana após submetidas ao tratamento térmico. Foi realizada a determinação da concentração inibitória e bactericida mínima (CIM e CBM) para a papaína e bromelina frente as cepas de Alicyclobacillus spp. Foi determinado a curva do tempo de morte do micro-organismo na presença e ausência das enzimas e investigado a atividade enzimática como mecanismo de ação sobre o micro-organismo através de ensaios com inibidores enzimáticos e desnaturação. A atividade antibacteriana das enzimas foi também avaliada em combinação com nisina. A microencapsulação das enzimas foi realizada através de secagem por pulverização (Spray dryer) utilizando como material encapsulante o alginato e a quitosana, em seguida os compostos foram submetidos ao tratamento térmico e após sua atividade inibitória e bactericida foi avaliada frente a cinco espécies diferentes de Alicyclobacillus. As microcápsulas foram caracterizadas por Microscopia Eletrônica de Varredura (MEV), Calorimetria de Varrimento Diferencial (DSC) e Espectroscopia de Infravermelho (FT-IR). Os resultados mostraram que para a espécie A. acidoterrestris, a CIM da papaína foi de 0,98 μg/mL e a CBM foi de 3,91 μg/mL. Para a bromelina, a CIM foi de 62,5 μg/mL e a CBM foi de 250 μg/mL. A concentração de 4XCIM para ambas as enzimas foi suficiente para eliminar 4 logs do micro-organismo após 24 horas de incubação. Através da utilização de inibidores enzimáticos específicos para cisteína-proteases, verificou-se que a atividade antibacteriana da papaína e da bromelina não está relacionada com a sua atividade proteolítica, mas pode estar relacionada com outras atividades, tais como amidase e esterase. A atividade sinérgica entre as enzimas apresentou um índice de concentração inibitória fracional (FIC) de 0,16. A combinação com nisina apresentou um FIC de 0,25 para a papaína e 0,19 para a bromelina, ambos indicativos de sinergismo entre os compostos. O microencapsulamento das partículas com alginato e quitosana foi evidenciado através das análises físicas. Os resultados demonstraram que a papaína microencapsulada com quitosana ou alginato foi capaz de manter os valores de CIM baixos após a submissão ao tratamento térmico, demonstrando assim efetividade e potencial aplicação como bioconservante. A aplicação das enzimas em suco de laranja reconstituído contaminado com A. acidoterrestris demonstrou ser eficaz, pois após 48 h de incubação em três diferentes temperaturas, já houve a eliminação da população microbiana inicial. Portanto, papaína e bromelina são enzimas com ação antibacteriana em A. acidoterrestris. A técnica de microencapsulamento foi eficaz na proteção da atividade antibacteriana da papaína, caracterizando esse composto com grande potencial de aplicação como bioconservante em produtos ácidos, sendo necessários maiores estudos sobre estabilidade e características sensoriais quando aplicado ao alimento. 50 f
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- 2017
36. Orange juice effect on body composition and biochemical profile of obese individuals subjected to energy restriction diet
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Ribeiro, Carolina Barbosa [UNESP], Universidade Estadual Paulista (Unesp), and Cesar, Thais Borges [UNESP]
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Obesidade ,Dieta baixa em caloria ,Suco de Laranja ,Obesity ,Orange juice ,Low calorie diet - Abstract
Submitted by CAROLINA BARBOSA RIBEIRO null (carolina_nutricao@hotmail.com) on 2016-08-27T16:09:09Z No. of bitstreams: 1 Dissertação Carolina Ribeiro.pdf: 1264586 bytes, checksum: be68160f9be47f2315b6c9009941bf9d (MD5) Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-08-30T16:27:49Z (GMT) No. of bitstreams: 1 ribeiro_cb_me_arafcf_par.pdf: 748137 bytes, checksum: fbd34c9f5f9702eef378a81817e31ad2 (MD5) Made available in DSpace on 2016-08-30T16:27:49Z (GMT). No. of bitstreams: 1 ribeiro_cb_me_arafcf_par.pdf: 748137 bytes, checksum: fbd34c9f5f9702eef378a81817e31ad2 (MD5) Previous issue date: 2016-07-18 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Objetivo: verificar se a combinação de uma dieta baixa em calorias e o consumo de suco de laranja podem contribuir para a perda de peso e modificar positivamente os biomarcadores metabólicos nos indivíduos obesos. Métodos: 78 indivíduos obesos, com idade entre 36 ± 1 anos, e IMC de 33 ± 3 kg foram divididos aleatoriamente em dois grupos paralelos: (1) suco de laranja (n = 39), composto por indivíduos submetidos a uma dieta baixa em calorias concomitante a ingestão diária de 500 ml de suco de laranja; (2) controle (n=39) composto por indivíduos submetidos a uma dieta baixa em calorias. A avaliação da composição corporal, dos biomarcadores metabólicos e do consumo alimentar foram analisados ao longo de 12 semanas de intervenção. Resultados: Ambas as intervenções mostraram redução similar no peso corporal (6,5 kg; p = 0,363), IMC (2,5 kg / m2; p = 0,336), massa livre de gordura (1 kg; p = 0,296), massa gorda (5 kg; p = 0,580) ,percentual de gordura corporal (3%; p = 0,154), relação cintura / quadril (0,1%; p = 0,786), glicose (5 mg/dL; p = 0,525), não HDL-C ( 26,5 mg/dL; p =0,326), triglicerídeos (30 mg/dL; p = 0,740), fosfatase alcalina (5 UL; p = 0,989), AST (2,0 UL; p = 0,690), ALT (1,0 UL; p = 0,969) e GT (2,5 UL; p = 0,302). Entretanto, indivíduos do grupo suco de laranja tiveram maior diminuição nos níveis de insulina em 18% (p = 0,050), HOMA-IR de 33% (p = 0,042), colesterol total de 6% (P = 0,004), LDL-C em 24% (p =
- Published
- 2016
37. Influence of orange juice in the human intestinal microbiota
- Author
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Duque, Ana Luiza Rocha Faria [UNESP], Universidade Estadual Paulista (Unesp), Sivieri, Katia [UNESP], and Silva, Magali Monteiro da [UNESP]
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PCR-DGGE ,Suco de laranja ,Microbiota intestinal ,SEMH® ,SHIME® ,Orange juice ,Gut microbiota - Abstract
Submitted by ANA LUIZA ROCHA FARIA DUQUE null (analuiza.rduque@gmail.com) on 2016-04-24T19:06:34Z No. of bitstreams: 1 Dissertação Ana Luiza Duque.pdf: 1544679 bytes, checksum: decc5d7d0f47e1235b24c75d5577fd3b (MD5) Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-04-26T20:13:00Z (GMT) No. of bitstreams: 1 duque_alrf_me_arafcf.pdf: 1544679 bytes, checksum: decc5d7d0f47e1235b24c75d5577fd3b (MD5) Made available in DSpace on 2016-04-26T20:13:00Z (GMT). No. of bitstreams: 1 duque_alrf_me_arafcf.pdf: 1544679 bytes, checksum: decc5d7d0f47e1235b24c75d5577fd3b (MD5) Previous issue date: 2016-03-21 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) A microbiota intestinal apresenta impacto direto na saúde do hospedeiro sendo fortemente influenciada pela dieta. O consumo de suco de laranja vem sendo associado à redução do risco de desenvolvimento de doenças crônicas, principalmente devido à presença de compostos bioativos. Os compostos bioativos presentes no suco de laranja, especialmente os polifenóis, também podem estar relacionados com a composição e o metabolismo da microbiota intestinal. O objetivo desse trabalho foi avaliar a influência do suco de laranja fresco e pasteurizado sobre a microbiota intestinal usando o Simulador do Ecossistema Microbiano Humano (SEMH®). O SEMH® foi utilizado para investigar a fermentação do suco de laranja ao longo do cólon e para avaliar as alterações na composição e no metabolismo microbiano. A atividade antioxidante dos sucos e das amostras dos compartimentos do SEMH® também foi avaliada. Foi observado no tratamento com suco de laranja fresco aumento (p≤0,05) das populações de Lactobacillus spp., Enterococcus spp., Bifidobacterium spp. e Clostridium spp. e diminuição (p≤0,05) de enterobactérias, enquanto no tratamento com suco de laranja pasteurizado houve aumento (p≤0,05) da população de Lactobacillus spp. e diminuição (p≤0,05) de enterobactérias. A análise de PCR-DGGE mostrou redução dos valores de riqueza da população de bactérias totais para ambos os sucos. Em relação ao metabolismo microbiano, foi observado aumento (p≤0,05) da produção de ácidos graxos de cadeia curta (AGCC) e diminuição (p≤0,05) do conteúdo de íons amônio no tratamento com os sucos de laranja fresco e pasteurizado. A atividade antioxidante das amostras dos compartimentos do SEMH® no tratamento com os sucos de laranja foi elevada, com ligeira redução em comparação àquela do suco fresco e do suco pasteurizado. A Análise de Componentes Principais (ACP) permitiu diferenciar o tratamento com os sucos dos períodos controle e washout, mostrando que os sucos de laranja fresco e pasteurizado apresentaram impacto sobre a microbiota intestinal. Os sucos mostraram efeito prebiótico e seletivo sobre a microbiota intestinal com aumento de AGCC e bactérias comensais e diminuição de íons amônio, embora com redução dos valores de riqueza da população de bactérias totais. The gut microbiota has a direct impact on host's health being strongly influenced by diet. Orange juice consumption has been associated with a reduced risk of chronic diseases, largely because of the presence of bioactive compounds. The bioactive compounds present in orange juice, particularly polyphenols, may also be associated with the composition and metabolism of gut microbiota. The aim of this work was to evaluate the influence of fresh orange juice and pasteurized orange juice on gut microbiota using the Simulator of the Human Intestinal Microbial Ecosystem (SHIME®). SHIME® was used to investigate orange juice fermentation throughout the colon and to assess changes in microbial composition and microbial metabolism. Antioxidant activity of the SHIME® vessels and juice was also evaluated. An increase (p≤0.05) in Lactobacillus spp., Enterococcus spp., Bifidobacterium spp. and Clostridium spp. population was observed in fresh orange juice treatment, as well as a reduction (p≤0.05) in enterobacteria. Regarding pasteurized orange juice treatment, an increase (p≤0.05) in Lactobacillus spp. population and a decrease (p≤0.05) in enterobacteria was observed. The PCR-DGGE analysis showed a reduction in total bacteria population richness values on both juices. According to microbial metabolism, an increasing (p≤0.05) of short-chain fatty acids (SCFA) production and decreasing (p≤0.05) of ammonium was observed for two juices treatments evaluated. The antioxidant activity of the samples from the SHIME® vessels in the orange juice treatments was high, with a slight reduction compared to that of fresh juice and pasteurized juice. Both fresh and pasteurized orange juice influenced on gut microbiota according to Principal Component Analysis (PCA), which enabled to differentiate the orange juice treatments from control and washout periods. Both juices showed a prebiotic and selective effect on gut microbiota which is in agreement with increases in both SCFAs and commensal bacteria, as well as with decreases in ammonium levels, though total bacteria richness values were reduced.
- Published
- 2016
38. Influência do consumo de suco de laranja sobre marcadores bioquímicos, imunológicos e de estresse oxidativo em pacientes com hepatite C crônica
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Lima, Cláudia Gonçalves de [UNESP], Universidade Estadual Paulista (Unesp), and César, Thais Borges [UNESP]
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Suco de laranja ,Hepatite C ,Orange juice ,Stress oxidativo ,Marcadores bioquímicos - Abstract
Made available in DSpace on 2015-12-10T14:24:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-06-09. Added 1 bitstream(s) on 2015-12-10T14:28:14Z : No. of bitstreams: 1 000851689_20160630.pdf: 376120 bytes, checksum: 32fc16e2c5bbb863dfa1379cc26f22ee (MD5) Bitstreams deleted on 2016-07-01T13:02:22Z: 000851689_20160630.pdf,. Added 1 bitstream(s) on 2016-07-01T13:03:18Z : No. of bitstreams: 1 000851689.pdf: 831381 bytes, checksum: b7033baffb4ed0be7668f5c935297807 (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) O presente estudo teve como objetivo avaliar o efeito do consumo regular do suco de laranja nos parâmetros nutricionais, hemodinâmicos e bioquímicos de pacientes com hepatite C crônica. Participaram do estudo 66 indivíduos adultos de ambos os sexos, divididos em quatro grupos: Grupo com tratamento medicamentoso e com suco de laranja (MedSuco), Grupo sem tratamento medicamentoso e com suco de laranja (Suco), Grupo com tratamento medicamentoso e sem suco de laranja (Med) e Grupo sem tratamento medicamentoso e sem suco de laranja (Controle). Os participantes dos grupos Suco e MedSuco receberam 500 mL/dia de suco de laranja pasteurizado durante 8 semanas. As variáveis antropométricas utilizadas foram: peso, altura, dobras cutâneas do tríceps, bíceps, subescapular e supra ilíaca e circunferência da cintura. Para a avaliação hemodinâmica foram verificadas a pressão arterial sistólica e a diastólica, e para a avaliação dietética foi utilizado o registro alimentar, durante três dias alternados. Para a avaliação bioquímica foram realizadas dosagens de colesterol total, colesterol de HDL, triglicérides, glicemia de jejum, insulina, proteína C reativa, peroxidação lipídica, capacidade antioxidante, TNF-, interleucinas 6 e 10 e carga viral. Todas as avaliações foram realizadas antes e após o consumo do suco de laranja. Os resultados mostraram que após o consumo do suco de laranja, os pacientes do grupo Suco tiveram redução significativa do LDL-C (-9,9%), pressão arterial sistólica (-4.5%), insulina (-26.5%), índice HOMA (-32.0%), peroxidação lipídica (-68.5%), proteína C reativa (-48.8%) e TNF- (-11.7%), e aumento da capacidade antioxidante (1.2%); e os pacientes do grupo MedSuco tiveram redução significativa do LDL-C (-13.7%), pressão arterial sistólica (5.1%), HDL-C (-12.2%), peroxidação lipídica (-39.1%), proteína C reativa (-74.9%), TNF- (-8.8%) e carga viral (26.5%), e aumento da capacidade... This study aimed to evaluate the effect of regular orange juice consumption on nutritional parameters, hemodynamics and biochemicals of patients with chronic hepatitis C. The study included thirty-six adults of both sexes, divided into four groups: Group with drug treatment and orange juice (MedJuice), Group without drug treatment and with orange juice (Juice), Group with drug treatment and no orange juice (Med) and Group without drug treatment and no orange juice (Control). The participants of groups Juice and MedJuice received 500 mL / day of pasteurized orange juice for 8 weeks. The anthropometric variables were studied: weight, height, skin folds of the triceps, biceps, subscapular and suprailiac and waist circumference. For hemodynamic evaluation were found systolic and diastolic blood pressure, and for dietary assessment was used food records for three alternate days. For the biochemical evaluation were performed in total cholesterol, HDL cholesterol, triglycerides, fasting glucose, insulin, C-reactive protein, lipid peroxidation, antioxidant capacity, TNF-α, interleukins 6 and 10 and viral load. All evaluations were performed before and after consumption of orange juice. The results showed that after the consumption of orange juice, patients of Juice group had significant reduction in LDL-C (-9.9%), systolic blood pressure (-4.5%), insulin (-26.5%), HOMA index (-32.0%), lipid peroxidation (-68.5%), C-reactive protein (-48.8%) and TNF-α (-11.7%) and increase in antioxidant capacity (1.2%); and patients of MedJuice group had significant reduction in LDL-C (-13.7%), systolic blood pressure (5.1%), HDL-C (-12.2%), lipid peroxidation (-39.1%), C-reactive protein (-74.9% ), TNF-α (-8.8%) and viral load (26.5%) and increase in antioxidant capacity (2.5%). There was no significant decrease in anthropometric variables. Consumption of orange juice increased by 334.0% to intake of vitamin C and 63.6% folate intake of participants in the ...
- Published
- 2015
39. Factors Influencing the Adoptance of Future Contracts in the Supply of Orange Juice by Citrus Growers of São Paulo State, Brazil
- Author
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Clemente, Felippe and Coelho, Alexandre Bragança
- Subjects
Marketing ,FOS: Economics and business ,Agricultural Finance ,orange juice ,Mercado futuro ,Futures market ,logic model ,suco de laranja ,Crop Production/Industries ,modelo logit - Abstract
Objetivou-se, neste artigo, investigar o interesse dos citricultores paulistas na utilização de um novo contrato futuro de suco de laranja concentrado congelado, no Brasil. Para isso, foram entrevistados citricultores de onze municípios do interior do estado de São Paulo, região que concentra a maior produção de laranja do País. Para verificar quais os determinantes desse interesse, foi utilizado o modelo econométrico logit. Os resultados evidenciaram que deve-se conhecer a percepção do risco, os mercados futuros, utilização de contratos a termo e conhecimento do contrato futuro de Nova Iorque, que são as mais importantes variáveis na determinação da probabilidade de adoção de contratos futuros de suco de laranja concentrado congelado. A conclusão é de que a implantação de contratos futuros de suco de laranja concentrado congelado apresenta um aparato favorável, do lado do interesse dos participantes do mercado, de forma que se pode dizer que existe uma demanda potencial, no Brasil, para o lançamento desse contrato. ----- The purpose of this work was to investigate the interest of Paulist citrus growers in the use of a new future contract of frozen concentrated orange juice. Were interviewed citrus growers of eleven municipalities of the country side of the State of São Paulo, Brazil, where are found the majority of citrus growers of the country. The econometric logic model was used to assess the determinants of interest. According to results, one should know the risk perception, futures market, use of fixed-term contracts, and knowledge of futures contracts of New York, which are the most important parameters in determining of adoption likelihood of futures contract of frozen concentrated orange juice. Therefore, the implementation of these contracts shows a favourable apparatus for the market interveners, so that there are a potential demand for the releasing of the new contract in Brazil.
- Published
- 2015
- Full Text
- View/download PDF
40. Evaluation of the antibacterial and sporicidal activity of the essential oils of Copaifera multijuga and Thymus vulgaris and nisin against Alicyclobacillus acidoterrestris
- Author
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Silva, Angela Aparecida da, Benício Alves de Abreu Filho, João Alencar Pamphile - UEM, and Jane Martha Graton Mikcha - UEM
- Subjects
Suco de laranja ,Suco alimentar ,Atividade antibacteriana ,Brasil ,Nisina ,Alicyclobacillus acidoterrestris ,Copaifera multijuga ,Segurança alimentar ,Micro-organismo deteriorante ,Ciência e Tecnologia de Alimentos ,Avaliação dos agentes antibacterianos ,Ciências Agrárias ,Antibacterial ,Óleos essenciais ,Thymus vulgaris ,Micro-organismo termorresistente ,Antibacterianos ,Orange juice ,Brazil - Abstract
This study aimed to evaluate the bactericidal, bacteriostatic and sporicidal activity of the essential oils (EOs) of Copaifera multijuga and Thymus vulgaris against Alicyclobacillus acidoterrestris. The combined activity of the EOs and nisin was also assessed by determining the fractional inhibitory concentration (FIC). In addition, the minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and minimum sporicidal concentration (MSC) were evaluated by serial microdilution in Bacillus acidoterrestris (BAT) broth with subcultures in BAT agar. The MIC of the C. multijuga and T. vulgaris EOs were 300 μg mL-1 and 500 μg mL-1, respectively, and the MBC of both EOs was >1,000 μg mL-1. The best MSC of C. multijuga was reached at a concentration of 500 μg mL-1 with a reduction of 3.07 log CFU mL-1. For the EO of T. vulgaris, better results were observed at concentrations higher than 500 μg mL-1, and a reduction of 2.05 log CFU mL-1 was achieved at 1,000 μg mL-1. The checkerboard method showed that the combination of EOs and nisin had an additive interaction (FIC index of 0.75). The bactericidal activity was confirmed by the death curve. According to the selectivity index, the treatment was less selective for A. acidoterrestris than for Vero cells. The flow cytometry results indicated that the vegetative forms of A. acidoterrestris had a higher incidence of vegetative cells with alterations in cell membrane integrity compared to their spores; however, we cannot conclude that this is the main mechanism of action of the EOs. Our studies showed that the tested substances had good antibacterial properties because they reduced the viability of A. acidoterrestris. Thus, it is evident that the EOs of C. multijuga and T. vulgaris have potential for use as antibacterial agents against A. acidoterrestris. 46 f
- Published
- 2015
41. Influência do porta-enxerto, da configuração de extração e do período de maturação no teor de limonina e na aceitação sensorial do suco de laranja Pêra-Rio
- Author
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Barbosa, Eliane [UNESP], Universidade Estadual Paulista (Unesp), and Monteiro, Magali [UNESP]
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Suco de laranja ,Cítricos ,Vitamina C ,Físico-química ,Acido citrico ,Orange juice - Abstract
Made available in DSpace on 2015-04-09T12:28:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-12-04Bitstream added on 2015-04-09T12:47:40Z : No. of bitstreams: 1 000819891_20170203.pdf: 114246 bytes, checksum: 1096a63bbbc0e40bd32fc72ec64b94dd (MD5) Bitstreams deleted on 2017-02-03T10:35:33Z: 000819891_20170203.pdf,. Added 1 bitstream(s) on 2017-02-03T10:36:26Z : No. of bitstreams: 1 000819891.pdf: 673610 bytes, checksum: 544514b4993b42558a386af189b49cbf (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Programa de Apoio ao Desenvolvimento Científico da Faculdade de Ciências Farmacêuticas (PADC-FCF/UNESP) Este trabalho teve como objetivo reunir informações sobre os limonoides, em especial a limonina, visando compreender as causas da sua formação no suco de laranja, desenvolver e validar método analítico para determinação de limonina no suco de laranja, avaliar a influência do porta-enxerto, da configuração de extração e do período de maturação no teor de limonina, nas características físico-químicas, na aceitação sensorial, na intensidade dos gostos doce, ácido e amargo, na escala do ideal do gosto amargo e na intenção de compra do suco de laranja Pêra-Rio, além de determinar o threshold da limonina no suco de laranja da variedade Pêra-Rio. Para a validação do método analítico foram avaliados os parâmetros curva de calibração, linearidade, precisão, exatidão, limite de detecção e limite de quantificação. Em relação às características físico-químicas do suco de laranja, foram avaliados o teor de sólidos solúveis totais, a acidez titulável total, o conteúdo de ácido ascórbico e de açúcares totais, o pH e o ratio. Na aceitação sensorial do suco de laranja foram avaliados os atributos aparência, aroma, impressão global, sabor, textura e sabor residual no início e no fim da safra. Foram também avaliadas a intensidade dos gostos doce, ácido e amargo, e a escala do ideal para o gosto amargo do suco de laranja, além da intenção de compra no início e no fim da safra. Os limonoides são derivados triterpênicos presentes em Citrus. São encontrados em diferentes partes da planta na forma de agliconas e/ou glicosídeos. Os limonoides contribuem para o desenvolvimento do gosto amargo no suco de frutas cítricas, com impacto negativo sobre a qualidade do suco. A limonina, principal limonoide responsável pelo gosto amargo do suco de laranja, não está presente na fruta in natura, sendo formada a partir da extração do suco. A quantidade de limonina formada no suco é influenciada pelo tipo de ... The aim of this work was to gather information about limonoids, specially limonin, to understand the causes of their formation in orange juice, to develop and to validate an analytical method to determinate limonin in orange juice, to evaluate the influence of rootstock, extractor setting and maturity on the limonin level, the physico-chemical characteristics, the sensory acceptance, the intensity of sweet, sour and bitter tastes, the scale of the ideal for bitter taste and purchase intent of Pêra-Rio orange juice, and also to determine the threshold of limonin in orange juice from Pêra-Rio variety. Validation of the analytical method involved calibration curve, linearity, precision, accuracy, limit of detection and limit of quantification. Regarding to the physico-chemical characteristics of orange juice, soluble solids, titratable acidity, ascorbic acid and total sugars, pH and ratio were evaluated. Sensory acceptance of orange juice evaluated appearance, aroma, overall impression, flavor, texture and aftertaste at the beginning and ending of harvest. The intensity of sweet, sour and bitter tastes, the scale of the ideal for bitter taste of orange juice, and the purchase intent at the beginning and ending of harvest were also evaluated. Limonoids are highly oxygenated triterpenoids present in Citrus, in different parts of the plant as aglycones and/or glucosides. Limonoids contribute to the development of bitterness in citrus juice, with a negative impact on the quality of the juice. Limonin, the main limonoid responsible for bitterness in orange juice, is not present in the in natura fruit, but is formed from the extraction of the juice. The amount of limonin in the juice is influenced by the type of rootstock and variety of orange, mainly due to the maturation period. The developed and validated method was used to determine limonin in orange juice with precision and accuracy. Wide linear range was obtained (0.410-61.5 μg.mL-1), ...
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- 2014
42. Efeitos da ingestão aguda do suco de laranja na resposta glicêmica e insulínica, níveis séricos de leptina e adiponectina, consumo energético e atividade antioxidante
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Paiva, Aline Cardoso de [UNESP], Universidade Estadual Paulista (Unesp), and César, Thaís Borges [UNESP]
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Suco de laranja ,Leptina ,Insulina ,Orange juice ,Stress oxidativo ,Glicemia - Abstract
Made available in DSpace on 2015-04-09T12:28:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-11-26Bitstream added on 2015-04-09T12:47:48Z : No. of bitstreams: 1 000815387_20160101.pdf: 143415 bytes, checksum: b06ec919cb81af73b49422947e7c1e51 (MD5) Bitstreams deleted on 2016-01-04T10:26:39Z: 000815387_20160101.pdf,. Added 1 bitstream(s) on 2016-01-04T10:28:29Z : No. of bitstreams: 1 000815387.pdf: 725212 bytes, checksum: 8671b2c9eb067044b7e468cdc2529d0a (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Introdução: O suco de laranja contém açúcares e flavonoides que podem influenciar a saciedade, o consumo energético e de macronutrientes e o peso corporal, podendo ser um coadjuvante no tratamento e prevenção da obesidade e das doenças crônicas relacionadas. Objetivo: investigar o efeito da ingestão aguda do suco de laranja fresco e integral pasteurizado sobre a glicemia, marcadores da saciedade (insulina, leptina, adiponectina), no consumo alimentar e estresse oxidativo de indivíduos com peso normal e excesso de peso. Metodologia: Foi realizado um ensaio clínico com intervenção dietética aguda em 36 indivíduos saudáveis, com estado nutricional adequados ou acima do peso, de ambos os sexos. Os indivíduos foram submetidos a 3 etapas experimentais: 1) ingestão de suco de laranja fresco, 2) ingestão do suco de laranja pasteurizado e, 3) ingestão da bebida controle com sabor de laranja. Antes e após o consumo das bebidas testes foram feitas coletas de sangue (0, 30, 60, 120 e 300 min) para analise dos parâmetros bioquímicos (glicose, insulina, leptina, adiponectina) e posterior cálculo da resistência à insulina. Logo após a ingestão das bebidas os voluntários recebiam um café da manhã “ad libitum” onde eram anotados os alimentos consumidos nesta refeição e também nas outras realizadas durante o dia experimental. As análises da composição corporal (peso, estatura, índice de massa corporal, percentual de gordura e circunferência da cintura) e metabólicas (colesterol total, LDL-C, HDL-C, triglicérides) foram realizadas no primeiro dia do estudo. Os hormônios (leptina e adiponectina) foram dosados pelo método ELISA. O estresse oxidativo foi quantificado através dos métodos de determinação do estado antioxidante total (ABTS) e da peroxidação lipídica através da determinação das substâncias reativas ao ácido tiobarbitúrico (TBARS). Resultados: Os resultados mostraram que os voluntários obesos ... Introduction: Orange juice contains sugars and flavonoids that may influence satiety and energy and macronutrient intake, and body weight. Objective: investigating the effect of acute ingestion of fresh orange juice and pasteurized whole juice on blood glucose, markers of satiety and food intake in normal weight and overweight. Methods: A clinical study with acute dietary intervention in 36 healthy subjects with adequate nutritional status or overweight of both sexes was conducted. The subjects underwent three experimental steps: 1) intake of fresh orange (FOJ), 2) ingestion of pasteurized juice (POJ) and orange juice, 3) ingestion of the control beverage (CB) with orange flavor. Before and after consumption of the test beverage, bloods sampling (0, 30, 60, 120 and 300 min) were taken for analysis of biochemical parameters (glucose, insulin, leptin, adiponectin) and subsequent calculation of insulin resistance. Soon after ingestion of drinks volunteers received a breakfast of ad libitum where food consumption were noted in this meal and also the other made during the experimental day. Analyses of body composition (weight, height, body mass index, body fat percentage and waist circumference), parameters metabolic (total cholesterol, LDL-C, HDL-C, triglycerides) were performed on the first day of the study. Hormones (leptin and adiponectin) were measured by ELISA. Oxidative stress was quantified by measuring TBARS and ABTS methods. Results: The results showed that obese of both sexes volunteers have risk factors for developing metabolic syndrome, 61% have insulin resistance. For normal weight subjects, total concentration (AUC300min) of glucose and insulin was higher after CB, following by POJ (intermediate), and FOJ (lower). By it turn, normal weight subjects have shown total concentration of leptin (AUC300min) higher after FOJ intake, middle after POJ, and lower after CB. Adiponectin levels showed no change compared to the tested beverages.
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- 2014
43. Efeito do suco de laranja sobre biomarcadores relacionados ao excesso de peso e ao câncer
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Dourado, Grace Kelly Zanotti Simões [UNESP], Universidade Estadual Paulista (Unesp), and César, Thaís Borges [UNESP]
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Suco de laranja ,Obesidade ,Orange juice ,Flavonoides ,Cancer - Aspectos nutricionais - Abstract
Made available in DSpace on 2015-03-03T11:52:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-09-25Bitstream added on 2015-03-03T12:07:17Z : No. of bitstreams: 1 000806970_20160925.pdf: 126534 bytes, checksum: 08ad9bdf09e39dd0b7964469d7c3b62b (MD5) Bitstreams deleted on 2016-09-26T12:32:59Z: 000806970_20160925.pdf,. Added 1 bitstream(s) on 2016-09-26T12:33:34Z : No. of bitstreams: 1 000806970.pdf: 669145 bytes, checksum: 1ed5fe101942591f87430ea7c168ff09 (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) O objetivo desta pesquisa foi verificar o efeito do suco de laranja (SL) sobre dois tipos de condições, cuja as etiologias podem estar intimamente associadas a uma alimentação desequilibrada: o excesso de peso e o câncer. Baseado nessa abordagem, nós escolhemos avaliar os efeitos do SL em dois modelos experimentais diferentes: em humanos com excesso de peso (in vivo) e em cultura de células leucêmicas (in vitro). No experimento in vivo foram avaliados os níveis séricos de biomarcadores metabólicos, inflamatórios e oxidativos de indivíduos com peso normal e com sobrepeso após o consumo de oito semanas de suco de laranja blond (SLB). Os indivíduos foram divididos de acordo com o índice de massa corporal (IMC) em dois grupos: Peso normal e Sobrepeso. Em ambos os grupos, os indivíduos ingeriram 750 mL de SL diariamente. Foram avaliados a composição corporal (peso, estatura, IMC, gordura e circunferência da cintura), biomarcadores metabólicos (colesterol total, LDL-C, HDL-C, triglicérides, glicose, insulina, resistência à insulina e hemoglobina glicada), inflamatórios (proteína C reativa, IL-4, IL-10, IL-12, TNF-? e IFN-?) e oxidativos (malondialdeído e DPPH??). Os resultados mostraram que após o consumo de SLB, as medidas da composição corporal não foram alteradas em nenhum dos grupos. Entretanto, houve redução nos níveis de lipídeos séricos, aumento da citocina IL-12, diminuição da proteína C reativa e aumento na capacidade antioxidante em indivíduos com peso normal e sobrepeso. No experimento in vitro foram examinados o crescimento, o ciclo e apoptose celular após a administração do suco de laranja blond (SLB), do suco de laranja vermelha (SLV) e da hesperidina (HSP) em uma nova linhagem celular de leucemia linfoblástica aguda de células T (Loucy). A distribuição do ciclo celular e a morte celular por apoptose foram determinadas utilizando citometria de fluxo. A secreção das citocinas ... The objective of this study was to verify the effect of orange juice (OJ) on two types of conditions whose etiologies may be closely associated with an unbalanced diet: overweight and cancer. Based on this approach, we chose to evaluate the effects of OJ in two different experimental models: in overweight humans (in vivo) and in cultured leukemic cells (in vitro). In the in vivo experiment were evaluated serum levels of metabolic, inflammatory and oxidative biomarkers of normal weight and overweight after consuming eight weeks of blond orange juice (BOJ). The subjects were divided according to body mass index (BMI) in two groups: normal weight and overweight. In both groups, subjects ingested 750 ml of BOJ daily. Body composition (weight, height, BMI, fat and waist circumference), metabolic biomarkers (total cholesterol, LDL-C, HDL-C, triglycerides, glucose, insulin, insulin resistance and glycated hemoglobin), inflammatory (protein were evaluated C reactive protein, IL-4, IL-10, IL-12, TNF-? and IFN-?) and oxidation (malondialdehyde and DPPH??). The results showed that after BOJ consumption, the measurements of body composition were not altered in either group. However, there was a reduction in serum lipid levels, increased cytokine IL-12, decreased C-reactive protein and increased of antioxidant capacity in normal and overweight. In the in vitro study, the growth, cycle and apoptosis cell were examined after administration of BOJ juice, red orange juice (ROJ), and hesperidin (HSP) into a new acute lymphoblastic leukemia cell line T cells (Loucy). The cell cycle distribution and apoptotic cell death were determined using flow cytometry. The secretion of IL-1?, IL1-?, IL-2, IL-4, IL-6, IL-10, IL-17A, IFN?, TNF?, TGF?, and MIP? were evaluated by ELISA array. BOJ and ROJ caused no alterations in cell proliferation, but both reduced cell viability by about 25%. BOJ induced cell cycle arrest in G0/G1 phase and decreased the ...
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- 2014
44. Biodisponibilidade de flavanonas e atividade antioxidante do suco de laranja fresco versus suco de laranja pasteurizado em humanos saudáveis
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Silveira, Jacqueline Queiroz da [UNESP], Universidade Estadual Paulista (Unesp), and César, Thaís Borges [UNESP]
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Suco de laranja ,Farmacocinetica ,Antioxidantes ,Hesperidina ,Orange juice ,Pasteurização - Abstract
Made available in DSpace on 2015-01-26T13:21:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-08-19Bitstream added on 2015-01-26T13:30:22Z : No. of bitstreams: 1 000797145.pdf: 1822373 bytes, checksum: f8a1e35f0b761d9d693f585ff9ccdb5d (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) As flavanonas (hesperidina e narirutina) presentes quase exclusivamente em laranjas são associadas a diversos benefícios à saúde. O objetivo deste estudo foi analisar as diferenças dos parâmetros farmacocinéticos dos metabólitos das flavanonas e a atividade antioxidante em humanos, após o consumo de dois tipos de suco de laranja: fresco e pasteurizado. O suco fresco foi extraído com o auxílio de um espremedor MJ-20 Basic e o pasteurizado (95ºC/15s) foi fornecido pela Citrosuco, Matão-SP. Ambos os sucos foram obtidos a partir de laranjas Pera Rio do mesmo lote. Participaram 12 homens e 12 mulheres saudáveis, com 27 ± 6 anos, IMC de 24 ± 3 kg/m2, não-fumantes e que não utilizavam nenhum tipo de hormônio ou suplementos dietéticos. Os voluntários ingeriram 11,5 ml/kg de peso corporal de suco de laranja fresco e, após washout de 30 dias, ingeriram a mesma quantidade de suco pasteurizado. Foi solicitado que os voluntários evitassem o consumo de alimentos cítricos nos 3 dias precedentes aos dias experimentais e as refeições do dia (café da manhã, almoço e lanche da tarde) foram fornecidas a fim de assegurar a abstenção de alimentos ricos em flavonoides. A urina foi coletada durante 24 h e o sangue foi coletado em jejum, 3, 4, 5, 6, 7, 8 e 24 h após o consumo do suco. Os metabólitos foram analisados no plasma sanguíneo e na urina por cromatografia líquida de alta performance por ionização electrospray acoplada à espectrometria de massa (HPLC-ESI-MS). A atividade antioxidante foi avaliada no soro sanguíneo por ABTS e TBARS, nos tempos: jejum, 4, 8 e 24 h. As concentrações de hesperidina e narirutina no suco de laranja comercialmente pasteurizado foram 3,2 e 6,6 vezes maiores do que no suco fresco, respectivamente, e estes compostos foram encontrados em grande parte na fração insolúvel (pellet) no suco pasteurizado, enquanto que ocorreram quase completamente na fração solúvel (sobrenadante) no suco fresco. A ... Flavanones (hesperidin and narirutin) present almost exclusively in oranges, are associated with various health benefits. The aim of this study was to analyze the differences in the pharmacokinetic parameters of the flavanones metabolites and antioxidant activity in humans after consumption of two types of orange juice: fresh and pasteurized. Fresh orange juice (FOJ) is extracted with the aid of a squeezer MJ-20 Basic and pasteurized (95°C/ 15s) was provided by Citrosuco Matão SP. Both juices were obtained from Pera Rio oranges from the same batch. Participated 12 men and 12 healthy women, 27 ± 6 years, BMI 24 ± 3 kg/m2, and non-smokers who did not use any hormones or dietary supplements. Volunteers ingested 11.5 ml/kg body weight of fresh orange juice and after washout of 30 days, they ingested the same amount of pasteurized juice. Volunteers were asked to avoid consumption of citrus foods in the preceding three days to the experiment and meals of the day (breakfast, lunch and afternoon snack) were provided to ensure the avoidance of foods rich in flavonoids. Urine was collected during 24 h and the blood was collected from fasting, 3, 4, 5, 6, 7, 8 and 24 h after the consumption of the juice. The metabolites were analyzed in plasma and urine by high-performance liquid chromatography- electrospray ionization- mass spectrometry (HPLC-ESI-MS). The antioxidant activity was evaluated in blood serum by ABTS and TBARS, at fasting, 4, 8 and 24 h. The concentrations of hesperidin and narirutina after the ingestion of commercially pasteurized orange juice were 3.2 and 6.6 times higher than after fresh juice, respectively, and these compounds have been found largely in the insoluble fraction (pellet) in pasteurized juice, while occurred almost entirely in the soluble fraction (supernatant) in fresh juice. The urine chromatographic analysis showed concentrations of conjugated of glucuronic acid and sulfate groups of hesperetin and naringenin ...
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- 2014
45. Determinação de compostos bioativos e capacidade antioxidante em sucos frescos e pasteurizados de laranja
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Alegre, Gabriela Fabiana Soares [UNESP], Universidade Estadual Paulista (Unesp), and Sylos, Célia Maria de [UNESP]
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Suco de laranja Pasteurização ,Suco de laranja ,Vitamina C ,Compostos bioativos ,Carotenoides ,Hesperidina ,Orange juice ,Flavonoides - Abstract
Made available in DSpace on 2015-04-09T12:28:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-08-18Bitstream added on 2015-04-09T12:48:22Z : No. of bitstreams: 1 000819846_20160128.pdf: 94268 bytes, checksum: 3e767978f4c2a08936f2f35236f557c5 (MD5) Bitstreams deleted on 2016-01-28T17:44:55Z: 000819846_20160128.pdf,. Added 1 bitstream(s) on 2016-01-28T17:45:36Z : No. of bitstreams: 1 000819846.pdf: 744665 bytes, checksum: 175e263bf172f081d665ded7de80484f (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Suco de laranja é fonte de compostos benéficos à saúde, como vitamina C, flavonóides e carotenóides, que lhe conferem também propriedade antioxidante. Apesar de muito ser investigado sobre seus compostos bioativos e consequente capacidade antioxidante, há poucos trabalhos que relatem estimação do potencial antioxidante em sucos fresco e pasteurizado de laranja, que são as principais formas disponíveis para consumo no Brasil. Sendo assim o objetivo desse trabalho foi verificar se há diferença no potencial antioxidante nesses dois tipos de sucos. Para isso teores de vitamina C, fenólicos, carotenóides, e flavonóides (flavanonas glicosiladas narirutina, naringina, hesperidina, e flavonas polimetoxiladas sinensetina, nobiletina e tangeritina) foram medidos, e a capacidade antioxidante determinada por três diferentes ensaios, FRAP, ORAC e MTT, sendo este último utilizado pela primeira vez com suco de laranja. Dos três ensaios utilizados, o ORAC foi o que mostrou maiores resultados (cerca 700 vezes maior que MTT e 50 vezes maior que FRAP) e que podem apresentar maior relevância biológica por envolver a geração de radicais livres (peroxilas) de significância patológica, apesar disso o método MTT demonstrou ser uma alternativa viável para medir a capacidade antioxidante de suco de laranja, já que as amostras reduziram o reagente, comprovando seu caráter redutor. O processo de pasteurização pareceu influenciar os conteúdos de fenólicos e carotenóides totais, tendo os sucos pasteurizados menor concentração em relação aos sucos frescos. Em relação ao teor de vitamina C, que variou de 325 a 530 mg/L, não houve diferença significativa entre os sucos frescos e pasteurizados. Quanto aos flavonóides os sucos frescos tiveram maiores concentrações de flavanonas glicosiladas, sendo a hesperidina a predominante (2637-3558 mg/L), enquanto os sucos pasteurizados tiveram maiores níveis de flavonas polimetoxiladas, tendo a ... Orange juice is source of beneficial compounds to health, such as vitamin C, flavonoids and carotenoids, which give also antioxidant properties. Although much be investigated on their bioactive compounds and antioxidant capacity resulting, there are few studies that report estimating the antioxidant potential in fresh and pasteurized juices of orange, which are the main forms available for consumption in Brazil. Thus the aim of this study was to observe the differences in the antioxidant potential in these two types of juices. For this vitamin C content, phenolics, carotenoids and flavonoids (flavanones glycosides narirutin, naringin, hesperidin and flavones polymethoxylated sinensetin, nobiletin and tangeritin) were measured, and the antioxidant capacity determined by three different assays, FRAP, ORAC, and MTT the latter being used for the first time with orange juice. Of the three trials used the ORAC was what showed better results (up to 700 times greater than MTT and 50 times greater than FRAP) and that may have greater biological relevance because it involves the generation of free radicals (peroxyl) of pathological significance, yet the MTT method proved to be a viable alternative to measure the antioxidant capacity of orange juice, with the samples reduced the reagent, demonstrating its reducing character. Pasteurization seem to influence the phenolic content and total carotenoids, with the pasteurized juice lower concentration compared to the fresh juice. Regarding the content of vitamin C, ranging 325-530 mg / L, was no significant difference between fresh and pasteurized juices. With regard to the fresh juice flavonoids had higher concentrations of flavanones glycosides, hesperidin is the predominant (2637-3558 mg/L), while the pasteurized juice had higher levels of flavones polymethoxylated, nobiletin having the highest concentration (10.86 to 16 mg/L). The juices showed similar responses from the antioxidant assays, indicating...
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- 2014
46. Fungicides determination in orange juice using modified mini-luke extraction method and UPLC-MS/MS
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Reichert, Jaqueline Fabiane, Cardoso, Carmem Dickow, Jabor, Valquíria Aparecida Polisel, and Penna, Neidi Garcia
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Suco de laranja ,Modified mini-Luke ,Fungicidas ,UPLC-MS/MS ,Mini-Luke modificado ,CIENCIAS EXATAS E DA TERRA::QUIMICA [CNPQ] ,Orange juice ,Fungicides - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Orange juice is a relevant contribution to the Brazilian economy, as long as five glasses of orange juice consumed in the world, three are produced in Brazil. For the purpose of increase the production of fruits and, consequently, juices, there is a growing concern about the presence of pesticide residues in food, so monitoring by analytical methods is required in order to ensure consumer s health. This study shows the validation of an analytical method for the determination of nine fungicides in natural and processed orange juices by UPLC-MS/MS. The extraction procedure used was the modified mini-Luke method. Developed in 1975, it was modified in later years and has been used to monitor the presence of pesticides in non-fatty matrices such as fruits and vegetables. The method consists of adding 30 mL of acetone followed by 60 mL of 1:1 (v/v) mixture of petroleum ether and dichloromethane to 15 g of sample. After homogenization and centrifugation, an aliquot of 1.2 mL was transferred into tubes and evaporation led to a water bath to near dryness. The residue was reconstituted in 1 mL of methanol containing 0.1% acetic acid and analyzed by UPLC-MS/MS. The parameters evaluated for the validation were: calibration curve and linearity, limit of detection (LOD), limit of quantification (LOQ), accuracy (as recovery%), precision (as RSD %) and selectivity (as matrix effects%). The results were satisfactory for all parameters, thus showing that the modified mini-Luke extraction method was effective to extract the studied fungicides in natural and processed orange juices. In the range of concentration studied, the method was linear. The method LOQ were 10, 20 and 50μg kg-1 for six, two and one fungicides studied, respectively. It is noted that these values are the same or below the values of the maximum residue limits (MRL) established by Brazilian, American and European laws, indicating that the method can be used worldwide to determine the nine fungicides studied in orange juice.It can be inferred that the method is selective, as long as this parameter was assessed from the matrix effects. It was negative for most of the fungicides studied and all values remained in the range -20 to +20%, not influencing the results. The analyzed fungicides, show average recoveries between 70 and 120%, only excepting thiophanate - methyl and carbendazin. The thiophanate-methyl presented values below 70% when spiked at concentrations of 10 and 20 μg kg 1 and carbendazim presented values above 120% when spiked at concentrations of 10 μg kg 1. The extraction method, combined with modern chromatographic technique for the determination of analytes, were effective for the analysis of pesticide residues in orange juice. O suco de laranja representa uma contribuição relevante para a economia brasileira, uma vez que, de cada cinco copos de suco de laranja consumidos no mundo, três são produzidos no Brasil. A fim de aumentar a produção de frutas e, consequentemente, de sucos, também é verificado um aumento na preocupação quanto à presença de resíduos de agrotóxicos em matrizes alimentares, fazendo-se necessário o monitoramento, através de métodos analíticos para, assim assegurar a saúde do consumidor. Neste estudo, foi validado um método analítico para determinação de nove fungicidas em sucos de laranja natural e processado por UPLC-MS/MS. Para a extração dos fungicidas da matriz, utilizou-se o método denominado mini-Luke modificado. Desenvolvido no ano de 1975, sofreu algumas modificações nos anos posteriores e tem sido utilizado para monitorar a presença de agrotóxicos em matrizes não gordurosas como frutas e vegetais. O método consiste na adição de 30 mL de acetona, seguidos de 60 mL da mistura 1:1 (v/v) de éter de petróleo e diclorometano em 15 g de amostra. Após homogeneização e centrifugação, foi retirada uma alíquota de 1,2 mL do extrato, que após evaporação, foi ressuspendido em 1 mL de metanol acidificado com 0,1% de ácido acético e analisado por UPLC-MS/MS. Os parâmetros avaliados para validação do método foram: curva analítica e linearidade, limite de detecção (LOD), limite de quantificação (LOQ), exatidão (recuperação%), precisão (RSD%) e seletividade (efeito matriz%). Os resultados obtidos foram satisfatórios para todos os parâmetros avaliados, mostrando desta forma, que o método de extração mini-Luke modificado foi eficaz para extrair os fungicidas estudados em sucos de laranja natural e processado. Na faixa de concentração estudada, o método mostrou-se linear. Os valores de LOQ do método foram de 10, 20 e 50 μg kg-1 para seis, dois e um fungicidas estudados, respectivamente. Salienta-se que estes valores são iguais ou inferiores aos valores dos limites máximos de resíduos (LMR) estabelecidos pelas legislações brasileira, americana e européia, indicando que o método pode ser empregado a nível mundial para determinar os nove fungicidas estudados em sucos de laranja. Pode-se afirmar que o método é seletivo, uma vez que este parâmetro foi avaliado a partir do efeito matriz, o qual para a maioria dos fungicidas estudados foi negativo, e todos os valores permaneceram na faixa de -20 e +20%, não influenciando os resultados. Os fungicidas estudados apresentaram valores de recuperação dentro da faixa de 70 a 120% com exceção do tiofanato-metílico e do carbendazim. O tiofanato-metílico apresentou valores abaixo de 70% para os níveis de fortificação de 10 e 20 μg kg-1 e o carbendazim, valores acima de 120% para o nível de fortificação de 10 μg kg-1. O método de extração, aliado com a técnica cromatográfica para determinação dos analitos, mostraram-se eficientes para a análise de resíduos de agrotóxicos em sucos de laranja.
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- 2014
47. Determinação quantitativa de grupos de bactérias em sucos de laranja ao natural Quantitative determination of bacteria groups in fresh, natural orange juice
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Dirceu do Nascimento and Sirdeia M. P. Furlanetto
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Alimentos ,Suco de frutas naturais ,Suco de laranja ,Food microbiology ,Juices ,Orange juice ,Public aspects of medicine ,RA1-1270 - Abstract
Foi realizada investigação com a finalidade de se conhecer a microbiota aeróbia do suco de laranja ao natural oferecido ao consumo público, através das contagens de bactérias mesófilas e ácido-produtoras, e da determinação do número mais provável (NMP) de bactérias coliformes totais e fecais e de estreptococos fecais.This investigation was carried out to discover the aerobic microbiota in natural orange juice served the public. Counts were made of mesophilic bacteria and acid producers, and the most probable number of totally coliform bacteria, fecal bacteria, and fecal streptocci was determined.
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48. Impacto da tecnologia de alta pressão hidrostática sobre a qualidade do suco de laranja
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Bisconsin Junior, Antonio [UNESP], Universidade Estadual Paulista (Unesp), Silva, Magali Monteiro da [UNESP], and Rosenthal, Amauri [UNESP]
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Suco de laranja ,Vitamina C ,Fenóis ,Antioxidantes ,Orange juice ,Laranja - Abstract
Made available in DSpace on 2014-06-11T19:23:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-09-16Bitstream added on 2014-06-13T20:50:16Z : No. of bitstreams: 1 bisconsinjunior_a_me_arafcf_parcial.pdf: 160481 bytes, checksum: f8f2c70b5dce7f83704c5014671cefab (MD5) Bitstreams deleted on 2014-06-27T19:00:48Z: bisconsinjunior_a_me_arafcf_parcial.pdf,Bitstream added on 2014-06-27T19:02:04Z : No. of bitstreams: 1 bisconsinjunior_a_me_arafcf.pdf: 1529598 bytes, checksum: 0af6066a32d281a638b3359c7de9882d (MD5) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) O suco de laranja é o suco de fruta mais popular e mais consumido em todo mundo. O Brasil é o maior produtor e exportador mundial de suco de laranja. O consumo de suco de laranja é estimado em mais de 9 bilhões de litros por ano, representando 47% do consumo mundial de suco. A fim de aumentar a vida de prateleira e a estabilidade do suco de laranja, a tecnologia de alta pressão hidrostática (APH) pode ser utilizada como um método alternativo à pasteurização. Este trabalho teve como objetivo otimizar as condições de processamento do suco de laranja da variedade Pêra Rio por APH, pressão (100- 600 MPa), temperatura (30-60 °C) e tempo (30-360 s), avaliar o efeito das condições do processamento de APH no ácido ascórbico e na atividade antioxidante do suco de laranja e avaliar a qualidade do suco de laranja processado a 520 MPa, 60 °C por 360 s, comparativamente ao suco pasteurizado e não processado. A metodologia de superfície de resposta foi empregada para estimar a redução da atividade da enzima pectinametilesterase (PME), da contagem de microrganismos, do ácido ascórbico e da atividade antioxidante no suco de laranja processado por APH. Também foram avaliados, as características físico-químicas, a cor instrumental, os compostos fenólicos e a atividade antioxidante do suco de laranja. O aumento da pressão, temperatura e tempo reduziram a atividade da PME e a contagem de microrganismos, exceto pela região entre 170 a 310 MPa, 30 a 45 °C e 30 a 150 s, que aumentou a atividade da PME. A faixa ótima de processamento por APH foi 550 a 600 MPa, 55 a 60 °C e 330 a 360 s, sendo capaz de produzir suco de laranja com população de microrganismos de menos de 2 ciclos logarítmicos de UFC/mL e atividade residual da PME menor que 20%. Ainda, o aumento da temperature e do tempo do processamento por APH reduziu o teor de ácido ascórbico... Orange juice is the most popular and consumed fruit juice in the world. Brazil is the main orange juice world producer and exporter. The consumption of orange juice is estimated at more than 9 billion liters per year, which represents 47% of global fruit juice consumption. In order to improve orange juice shelf life and stability, high hydrostatic pressure (HHP) processing can be used as an alternative to pasteurization. The aim of this work was to optimize the HHP processing conditions of Pêra Rio orange juice, namely pressure (100-600 MPa), temperature (30-60 °C) and time (30-360 s), to evaluate the effect of HHP processing conditions on ascorbic acid and antioxidant activity of orange juice and to evaluate the quality of orange juice processed at 520 MPa, 60 °C for 260 s in comparison to pasteurized and non processed orange juice. Response surface methodology was used to estimate the decrease of microflora, pectinmethyl esterase (PME) activity, ascorbic acid and antioxidant activity in HHP processed Pêra Rio orange juice. The physicalchemical characteristics, the instrumental color, the total phenolic compounds and the antioxidant activity of orange juice were also evaluate. The increase in pressure, temperature and time reduced the PME activity and native microflora of orange juice, except at the region between 170 to 310 MPa, 30 to 45 °C and 30 to 150 s, which enhanced PME activity. The range of optimum HHP processing conditions were 550 to 600 MPa, 55 to 60 °C and 330 to 360 s, which was able to produce a stable orange juice with microorganisms population less than 2 log cycles CFU/mL and PME residual activity less than 20%. The increase in time and temperature of HHP exert influence on the reduction of ascorbic acid and antioxidant activity on orange juice... (Complete abstract click electronic access below) FAPESP: 11/11574-2 FAPESP: 11/04029-8 FAPESP: 10/168267 FAPESP: 13/00424-5
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- 2013
49. Germination of spores of Alicyclobacillus acidoterrestris and Byssochlamys nivea for high pressure average temperatures in orange whole juice
- Author
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Ferreira, Glaucia Aparecida Mataveli, Carvalho, Raquel Vieira de, Fantuzzi, Elisabete, Bernardes, Patrícia Campos, and Peña, Wilmer Edgard Luera
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Spores ,Suco de laranja ,High pressure ,Alicyclobacillus acidoterrestris germination ,Byssochlamys nivea ,CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS [CNPQ] ,Orange juice ,Esporos ,Alicyclobacillus acidoterrestris germinação ,Alta pressão ,Deterioration ,Deterioração - Abstract
Made available in DSpace on 2016-12-23T13:50:03Z (GMT). No. of bitstreams: 1 Glaucia Aparecida Mataveli Ferreira.pdf: 3542817 bytes, checksum: 07aaaa82697b511556deff5cd7ccaf87 (MD5) Previous issue date: 2013-08-29 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Byssochlamys nívea e Alicyclobacillus acidoterrestris são micro-organismos deterioradores de grande importância para a indústria de suco de frutas, por serem capazes de produzir esporos que por sua vez suportam os tratamentos térmicos, normalmente utilizados na pasteurização de sucos. Esses esporos podem ser ativados pelo calor antecipando a deterioração desses alimentos e causando grandes prejuízos à indústria de suco de frutas. Assim, a busca por novas estratégias para minimizar esses problemas tem sido objeto de pesquisa. O estudo da associação entre tecnologias térmicas e não térmicas vem se destacando, na tentativa de controlar ou inibir a presença desses micro-organismos. Uma das estratégias é a inativação dos micro-organismos em duas etapas. Na primeira, um pré-tratamento visa sensibilizar os microorganismos por meio de ativação da germinação. Na segunda etapa, o tratamento teria como objetivo inativar os micro-organismos sensibilizados. Neste estudo, utilizou-se a combinação de temperatura seguido de alta pressão, a fim de testar o comportamento de esporos de B. nivea e A. acidoterrestris. As temperaturas variaram de 46,6-63,4 °C durante vinte minutos, seguidos de alta pressão que variaram entre 300 e 500 MPa, por tempos de 5 a 15 minutos, constituindo o delineamento composto central rotacional (DCCR). Para a germinação de B. nivea, o fator mais significativo (p
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- 2013
50. Efeitos do tratamento térmico em separado da polpa e do suco sobre a qualidade físico-química, microbiológica, enzimática e sensorial do suco de laranja mantido sob refrigeração
- Author
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Silva, Felipe Rodrigues Nogueira [UNESP], Universidade Estadual Paulista (Unesp), Barbosa, Roger Darros [UNESP], and Janzantti, Natália Soares [UNESP]
- Subjects
Alimentos - Avaliação sensorial ,Tecnologia de alimentos ,Orange juice ,Enzimas - Analise ,Suco de laranja - Pasteurização - Abstract
Made available in DSpace on 2014-11-10T11:09:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-08-19Bitstream added on 2014-11-10T11:58:01Z : No. of bitstreams: 1 000789216.pdf: 1865678 bytes, checksum: 3e46ab6f70e4d6bbe6adacce974ec727 (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Pasteurização constitui-se numa das técnicas mais utilizadas para se aumentar a vida de prateleira de sucos de frutas, seguida da conservação sob refrigeração, por destruir microrganismos patogênicos por processo térmico adequado que minimize as perdas dos atributos de qualidade sensorial e nutricional. No caso da laranja, a enzima pectinesterase está presente em quase todas as partes do fruto, principalmente no flavedo, albedo, membranas e sementes e no suco quando as vesículas são rompidas; requerendo inativação, para manter atributos importantes de qualidade como a turvação. Neste sentido, o tratamento térmico do suco de laranja visa a inativação desta enzima, porém requer temperatura relativamente elevada, podendo interferir nas qualidades sensoriais em termos de sabor e aroma do suco. O objetivo desse trabalho foi avaliar a qualidade físico-química, enzimática, microbiológica e a aceitação sensorial do suco de laranja, mantido sob refrigeração, com diferentes teores de polpa, o qual foi termicamente tratado em separado e sob diferentes condições, polpa (94oC/15 s) e suco (80oC/15 s), e, em comparação com o suco convencional (94oC/15 s). Uma equipe de 69 consumidores não treinados avaliaram durante 21 dias os diferentes tipos de suco de laranja em relação a aparência, aceitação global, aroma, sabor e textura, e também em relação a quantidade de polpa presente nos sucos. A estabilidade físico-química, microbiológica (Salmonella sp., coliformes fecais, mesófilos totais e bolores e leveduras) e enzimática dos diferentes tipos de suco de laranja foram realizadas durante 28 dias. Os parâmetros físico-químicos para sólidos solúveis totais, acidez total tiltulável, pH, polpa sedimentada e flutuante tiveram poucas alterações durante estocagem. O suco tratado de modo convencional teve a maior degradação de ácido ascórbico entre todos os sucos. Dos demais sucos tratados em separado, o suco de ... Pasteurization is a common technique used to increase shelf life of fruit juices, followed by refrigeration, by destroying pathogenic microorganisms employing the appropriate thermal treatment that minimizes losses of sensory attributes and nutritional quality. Pectinesterase is an enzyme present in almost all parts of the orange fruit, mainly in the flavedo, albedo, seeds and membranes, and when the juice vesicles are ruptured, requiring inactivation to maintain important quality attributes such as turbidity. Accordingly, the heat treatment of orange juice must inactivate this enzyme; however, it requires relatively high temperatures, which may interfere with sensory attributes such as flavor and aroma. The aim of this study was to evaluate the quality and stability under refrigeration of the juice, containing different amounts of pulp, thermally treated separately and by different conditions the pulp (94°C/15 s) and the juice (80°C/15 s), and compared with the conventionally pasteurized juice (94°C/15 s), by physical-chemistry, enzymatic and microbiological methods, and by sensory acceptance of orange juice. A team of 69 untrained panelists evaluated during 21 days the different types of orange juice for appearance, global acceptance, aroma, flavor and texture, and also regarding the amount of pulp. The physical-chemical, microbiological (Salmonella sp., Fecal coliforms, total mesophilic and fungi and yeast), and enzyme activity of the different types of orange juice were evaluated for 28 days. The results for the physical-chemical parameters of soluble solids, titratable acidity, pH, sinking and floating pulp had few changes during cold storage. The Orange juice treated in the conventional way had the highest vitamin C degradation among all juices. For the remaining juices treated separately, the juice with low pulp content suffered less degradation of vitamin C. The heat treatment of the juice and the pulp separately proved to be ...
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- 2013
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