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Copyright of Informacion Tecnica Economica Agraria is the property of Asociacion Interprofesional para el Desarrollo Agrario (AIDA) 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.)

Copyright of Investigación e Innovación en Ingenierías is the property of Universidad Simon Bolivar 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.)

Copyright of Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas is the property of Universidad de Santiago de Chile 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.)

Objective: to compare the in vitro antibacterial activity of the extract and essential oil of pineapple (Minthostachys mollis) leaves against two genera and five pathogenic bacterial strains. Materials and methods: experimental study, quantitative approach, modified Kirby-Bauer agar well method used to measure antibacterial activity. Results: the essential oil yield was 1.19%. The 100% essential oil was more effective in inhibiting the growth of S. aureus, Proteus spp, K. pneumoniae, E coli and P. aeruginosa with mean inhibition halos of 27 mm, 25 mm, 22 mm, 21 mm and 20 mm greater than that of the extract and doxycycline. In turn, it inhibited the growth of E. faecalis and Enterobacter spp, with greater effectiveness compared to the extract, doxycycline and ciprofloxacin. On the other hand, significant differences in inhibition means were observed in at least 2 of the groups analyzed with a p <0.05 and 95% confidence, from Tukey’s one-factor ANOVA and Kruskal-Wallis. Conclusions: Proteus spp, S. aureus, K. pneumoniae, E. coli and P. aeruginosa were inhibited by 100% essential oil of pineapple more effectively than by the extract and doxycycline. Similarly, compared to the extract and antimicrobials, the oil was the only one that effectively inhibited the growth of Enterobacter spp. and E. faecalis. [ABSTRACT FROM AUTHOR]

Background: The Clove (Syzygium aromaticum), a member of the Myrtaceae family, is cultivated in various countries across Asia, Africa, and the West. Eugenol, its primary volatile phenolic compound, imparts characteristic aroma and flavor, as well as possessing bactericidal properties. Objective: This study evaluated the antibacterial activity of clove essential oil (Syzygium aromaticum) against Escherichia coli, Pseudomonas aeruginosa, and Salmonella spp, isolated from food and water. Methods: To achieve this, the essential oil was extracted from the dried floral buds of cloves using the hydrodistillation method, using a Clevenger system. The susceptibility assessment of the strains took place using the disc diffusion method. Results: Escherichia coli and Salmonella, isolated from food, demonstrated sensitivity to the essential oil, with inhibition halos of 16 and 18 mm, respectively. The gram-negative strains Salmonella spp. and Salmonella isolated from sururu (Mytella guyanensis) were also sensitive to the oil, and the pattern with inhibition halos was 15 mm. However, strains of Pseudomonas aeruginosa, isolated from water, did not show activity against the essential oil. Discussion: The essential oil extracted from Syzygium aromaticum, known as clove, demonstrated a high level of antibacterial activity against two of the three tested bacterial strains (Escherichia coli and Salmonella spp), while exhibiting moderately effective activity against Pseudomonas aeruginosa. Conclusions: The microbiological study revealed that clove essential oil exhibited good antibacterial activity against the tested strains, with eugenol being the main compound responsible for this efficacy. [ABSTRACT FROM AUTHOR]

In order to develop natural alternatives to control mosquitoes of medical importance, the chemical composition and insecticidal activity of the essential oil of the rhizomes of Curcuma aeruginosa Roxb were evaluated. The oil was characterized by its organoleptic, physicalchemical properties and ultraviolet and infrared spectra. The quantification of the oil components was carried out by gas chromatography and the major ones were identified by mass spectrometry; Curzerenone was the most abundant component. The insecticidal activity was evaluated in populations of Aedes aegypti, Aedes albopictus and Culex quinquefasciatus using methodologies standardized by the World Health Organization. The oil maintained an homogeneous response against the three mosquito populations, showing significant larvicidal and adulticidal activities. It constitutes the first report of the chemical composition of the essential oil of C. aeruginosa cultivated in the eastern Cuban region and the bioassays conducted demonstrated its insecticidal potential as an ecological alternative. [ABSTRACT FROM AUTHOR]

Copyright of Revista de Ciências Agrárias is the property of Sociedade de Ciencias Agrarias de Portugal 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.)

Copyright of Revista de Ciências Agrárias is the property of Sociedade de Ciencias Agrarias de Portugal 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.)

Copyright of Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas is the property of Universidad de Santiago de Chile 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.)

Copyright of Revista CIENCIA UNEMI is the property of Universidad Estatal de Milagro (UNEMI) 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.)

Consumers are interested in natural, healthy, nutritious and wholesome products. This has motivated the development of research and edible coatings applied to fruit and vegetable products as an alternative to meet these needs. The purpose of this research is to demonstrate that the use of edible coatings helps the preservation and quality of guava. To meet the objective, six treatments were evaluated with a control, three formulations of nopal mucilage plus thyme essential oil (100% mucilage, 99.5% mucilage + 0.5% essential oil, 99% mucilage + 1% essential oil), at two immersion times (60 and 30 S). The variables considered were titratable acidity, pH, soluble solids, weight loss, and determination of the presence of microorganisms. The best treatment was a2b1 (99% mucilage + 1% thyme essential oil), because it preserved the greatest amount of fruit properties during the experiment. The response variable considered to be of great significance is weight, which was recorded daily for 10 days. In this physical parameter, the best treatment was a2b1 (99.5% mucilage + 1% thyme essential oil) for 30 seconds. [ABSTRACT FROM AUTHOR]

Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco 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.)

The objective of this work was to determine the antibacterial activity of the essential oil of Thymus vulgaris L. plants cultivated in Cuba on Xanthomonas phaseoli pv. phaseoli and its effect on the cytoplasmic membrane. The antibacterial activity was evaluated by agar diffusion methods, and the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) were determined by serial dilutions. The cell death time assay was performed to assess the bactericidal effect rapidity. To determine the effect on the membrane, assays for bacteriolysis, loss of cell content, and total proteins release by the action of the oil were carried out. T. vulgaris essential oil showed a strong antibacterial activity on Xap1, with a MIC of 0.3 mg. ml-1 and a MBC of 0,6 mg. ml-1. At the MBC, this essence caused death of 106 UFC. ml-1 of Xap1 in 30 min of exposure. T. vugaris oil increased permeability of the Xap1 membrane with the egress of cellular components, which triggered cell death. [ABSTRACT FROM AUTHOR]

The properties of the plants of the Zingiberaceae family are widely known worldwide, in traditional medicine, as anti-inflammatory, antioxidant, antiviral, among others. Framed in the high biochemical value of this family, this research focused on the optimization of extracting essential oils method from Curcuma longa dry rhizomes collected in the Department of Quindío (Colombia), using microwave-assisted hydrodistillation and evaluating variables optimized by response surfaces. The results obtained from the optimization showed a considerable improvement in the oils extraction from some aspects and variables, compared to conventional hydrodistillation. The yield of essential increased by 32%, in α-Turmerone as the most abundant component there was by 31%, the extraction time was reduced from 120 to 59 minutes, and the energy consumption and CO2 emission were reduced by one third. These interesting results encourage the potential improvement of possible applications in health, food or cosmetics. [ABSTRACT FROM AUTHOR]

Copyright of Opuntia Brava is the property of Universidad de Ciencias Pedagogicas de Las Tunas, Centro de Documentacion e Informacion Pedagogica 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.)

Copyright of Agroindustrial Science is the property of Agroindustrial Science 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.)

Copyright of Revista CienciaUAT is the property of Universidad Autonoma de Tamaulipas 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.)

Bakground: Ulcerative colitis (UC) is an inflammatory bowel disease that can be treated with many medications but they have various side effects and low cure rate. So, the need for finding novel drugs with better healing characters and less toxicity would be mandatory. Achillea millefolium (A. millefolium, Yarrow) has been traditionally used to treat bleeding, ulcers, wounds, liver, and bile disorders, and recently it has been shown to have anti-ulcer, analgesic, anti-inflammatory, antioxidant, and appetizing effects that make it as a good candidate for UC. Methods: UC was induced with intra-rectal instillation of acetic acid. A. millefolium hydroalcoholic extract (AMHE, 200, 400, and 600 mg/kg/day) and essential oil (AMEO, 62.5, 125, and 250 µl/kg/day) were given to six groups of male Wistar rats for 5 days. Dexamethasone (1 mg/kg/day, intra-peritoneal) and mesalazine (100 mg/kg/day, orally) were used as reference drugs. Colon tissue specimens were separated for assessing macroscopic, pathologic, and biochemical markers. Results: For AMHE, 77.2 mg/g equivalent to gallic acid was obtained for total phenols. Main assessed markers, including ulcer index, total colitis index, colon weight/length ratio, rats' weight gain, and malondialdehyde levels were significantly improved in AMHE (400 and 600 mg/kg/day) and AMEO (125 and 250 µl/kg/day) groups compared to controls. Myeloperoxidase activity was only attenuated in AMHE groups significantly. Conclusions: Both AMHE and AMEO were effective in healing experimental colitis. It seems antioxidant, anti-inflammatory, and anti-ulcer activities of Yarrow are responsible for these beneficial effects. Further studies are warranted to elucidate the exact mechanisms involved. [ABSTRACT FROM AUTHOR]

A bibliometric analysis of the information on essential oils (EOs) of Cuban plants was carried out. The search was carried out in the databases: Scopus, ScienceDirect, PubMed, Scielo and Infomed. In addition, Google Scholar and relevant scientific journals were also reviewed. Between 1971-2021, 240 published articles appeared in 53 journals in relation to AEs. In total, 222 researchers, belonging to 24 institutions, participated in these studies. The six most productive institutions were IIIA, CNIC, IPK, CENSA, University of Alabama at Huntville and CIDEM. From the analysis of the results, 31 botanical families and 162 species have been analyzed. The most representative families were Myrtaceae, Asteraceae, Lamiaceae and Rutaceae, while the most studied species were Citrus sinensis L., Citrus aurantifolia Swingle, Piper aduncum L. and Piper auritum H.B.K. By region of sample collection, samples from 13 Cuban provinces have been evaluated, most of them collected in the provinces of Artemisa, Pinar del Río and Havana. The leaves were the plant part for the extraction of EO and hydrodistillation the most used obtaining method. Different biological activities have been reported, such as: antibacterial, antifungal, antiprotozoal, antileishmanial, insecticidal, antiplasmodial, antioxidant and anticancer. It is recommended to expand in vivo trials to verify the efficacy and safety of the use of EOs. The information reported in this review can scientifically contribute to guide future research towards a new perspective with the EOs of Cuban plants. [ABSTRACT FROM AUTHOR]

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Copyright of Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas is the property of Universidad de Santiago de Chile 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.)

Copyright of Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas is the property of Universidad de Santiago de Chile 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.)

Due to the environmental problems generated by the use of packaging from petroleumderived materials, great interest has been aroused in seeking alternatives with the use of easily biodegradable natural products. The food industry has focused on the development of edible films and coatings from polysaccharides with characteristics similar to synthetic polymers, and in turn, by functionalization processes with bioactive substances allow, protect food from adverse processes during its manipulation, and potentiate its functional properties and its consequent benefits in the health of consumers. Therefore, the objective of this work will be to synthesize nanoemulsions by phase ion methodology, as curcumin vehicle, characterizing them according to their physical stability, antioxidant capacity by inhibition of peroxides and DPPH radicals. The systems synthesized above will be included in biodegradable films based on FHIA 21 banana starch and glycerol, studying the effect of the addition of nanoemulsion on the release capacity of curcumin, in simulated food and gastnroteistinal media. [ABSTRACT FROM AUTHOR]

Zingiber officinale (ginger) belongs to the Zingiberaceae family. It is a species widely used as a home remedy to aid digestion, treat flu, cough, nausea, and other ailments. Its aroma and flavor comes mainly from its essential oil, which has properties as an anti-inflammatory and antioxidant agent. The objective of this research is to extract the essential oil of ginger collected in the department of Quindío, using the hydrodistillation technique coupled to Clevenger and assisted by microwaves with and without previous ultrasound treatment. Determine its physicochemical properties such as relative density, refractive index and its organoleptic properties; additionally, to compare the metabolic content of essential oils obtained by gas chromatography coupled to mass spectrometry. [ABSTRACT FROM AUTHOR]

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Copyright of Ingeniería (0121-750X) is the property of Ingenieria 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.)

Soil fertility is affected by its acidic characteristics, causing limitations in the availability of phosphorus because it is absorbed or precipitated with iron and aluminum. The objective of the work was the search for endophytic bacteria phosphorus solubilizers of coffee variety bourbon and its evaluation in the promotion of growth in the coffee crop. Roots were taken, which were subjected to superficial disinfection, then macerated, the bacteria were isolated and characterized, by phylogenetic allocation (16S RNAr) and evaluation of the effect of inoculation on growth in seedling coffee. The results showed that coffee has phosphorus-solubilizing endophytic bacteria, from which 18 strains were obtained with assignment to Gammaproteobacteria (72 %), Firmicutes (22,3 %) and Betaproteobacteria (5,5 %). The End-F-34 and End-F-5 strains stood out for their ability to solubilize phosphorus, these were used in the seed inoculation test in coffee. it is concluded that the var. bourbon has phosphorus solubilizing microorganisms with endophytic habit and ability to stimulate coffee plants in their growth, these results generate great expectations for the use of the strains as biofertilizer. [ABSTRACT FROM AUTHOR]

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Copyright of Medicina Naturista is the property of Sociedad Europea de Medicina Naturista Clasica (Seccion Espanola) 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.)

Copyright of Revista Habanera de Ciencias Médicas is the property of Universidad de Ciencias Medicas de La Habana 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.)

Introduction: This study evaluated the chemical characterization, larvicidal activity and molluscicidal activity in front of the snail transmitting schistosomes (Biomphalaria glabrata) of the essential oils of Alpinia zerumbet and Cymbopogon citratus (DC.) Stapf. The essential oils (EOs) were extracted by hydrodistillation, with chemical characterization through Gas Chromatography coupled to mass spectrometry (GC-MS). The physical-chemical parameters were determined according to the Brazilian Pharmacopoeia. The toxicity test followed the bioassay with Artemia salina Leach, the EOs approved in this assay followed to evaluate their biological properties. Methodology: for molluscicidal activity, the methodology recommended by the WHO was performed, and the LC50 of the EOs was performed for their action in the face of the snail obtained by the Reed&Muench method. Both EOs showed low toxicity, and thus were evaluated for the biological properties larvicidal and molluscicidal. Alpinia zerumbet EO showed molluscicidal activity with LC50 of 40.63 mg·L-1 and Cymbopogon citratus EO 33.94 mg·L-1. Results: Both EOs showed larvicidal and molluscicidal potentials against the organisms tested, showing satisfactory results for their action. The results indicate that the evaluated EOs are composed of substances that promote and encourage their application due to their potential for molluscicidal and larvicidal biological activity. [ABSTRACT FROM AUTHOR]

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Copyright of Gestión y Ambiente is the property of Universidad Nacional de Colombia 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.)

Infections with Salmonella spp. (salmonellosis) are the second leading cause of foodborne diseases worldwide. Given the growing emergence of antibiotic resistant strains, alternatives for their treatment are being sought. Essential oils are a powerful natural antibacterial resource that requires more knowledge in understanding the mechanism of action. The objective of this work was to determine the effect of the essential oil of Thymus vulgaris L. from plants cultivated in Cuba on the cell permeability of the Salmonella enterica. A reference strain and a ß-lactam resistant strain were used in the trials. The effects of the essential oil on cell viability at the minimum inhibitory concentration (MIC) were determined through cell death time. The action of the essential oil on cell integrity was evidenced through bacteriolysis, loss of absorbent cell content and total proteins released. The essential oil of T. vulgaris at MIC caused cell death in one hour of contact for both strains. In addition, the release of absorbent cell components at 260 nm and the release of total proteins from both strains by the action of the essence were demonstrated within two hours of treatment, without causing cell lysis. The cytoplasmic membrane is identified as a possible site of action of this Cuban essence on S. enterica, from the release of cell components, which implies structural changes at cell level. The essential oil of T. vulgaris is a promising candidate for the development of antibacterial products for the control of salmonellosis. [ABSTRACT FROM AUTHOR]

In recent years, the national agro-industry has shown a significant dynamism, caused by the expansion of the fruit derivatives market. This activity has led to the generation of a large amount of waste, which has potential as a starting material for the production of commercial products with high added value such as: essential oils, fixed oils and fibers among others. The project funded by the Spanish Agency for International Cooperation for Development (AECID) "Support for the fruit and vegetable value chain in the province of Santiago de Cuba (PROSANTIAGO)" promotes the production of essential oils from their natural resources. Essential oils have an important demand in the food, pharmaceutical and cosmetics industries. This work describes the physical and chemical characterization of mango essential oil obtained by steam trawling, from agro industrial waste. The effect of steam pressure, state of ripeness of the mango, on the performance and quality of the essential oil was evaluated. The operating conditions were adjusted according to the design characteristics of the extraction plant of a local industry. The state of maturation 3 presented a higher yield compared to maturity stage 2 (green) and 4 (ripe) and the essential oil obtained with mango in maturity stage 4 was the highest quality. [ABSTRACT FROM AUTHOR]

The aim of the present paper was to review the properties of the oregano essential oil (OEO), its commercial obtaining, as well as the encapsulation processes used. The OEO is a natural product constituted by a complex mixture of volatile compounds, in which the monoterpene phenols carvacrol and thymol prevail. The OEO is used in alcoholic drinks, baked products, meat products, condiments and seasonings, dairy products, processed vegetables, fat and oils. The commercial obtaining is by water steam distillation. Despite the numerous applications, the OEO is very sensitive to the media where is applied. Encapsulation is an alternative to improves the stability and it favors its controlled release. Several techniques have been evaluated, but spray drying emerges as the most reported for OEO microencapsulation. [ABSTRACT FROM AUTHOR]

Zanthoxylum pseudodumosum is an endemic aromatic plant from Cuba that has been little studied, for this reason the aim of this work was to determinate the chemical composition of different products prepared from it, as well as to evaluate the antifungal activity in vitro against A. solani. The essential oil was obtained from its leaves by hydrodistillation, as well as the hexane and hydroalcoholic extracts by maceration. The phytochemical characterization of the isolated fractions was performed by chemical tests and with the help of thin layer chromatography. The products obtained were tested against the phytopathogenic fungus Alternaria solani, obtaining the Minimum Inhibitory Concentration (MIC) values by the microdilution method. The main metabolites found were terpenes, alkaloids, coumarins, anthraquinones, steroids and phenolic compounds. Hexane extract showed good antifungal activity with a MIC value of 1000 μgml-1, followed by essential oil with 2000 μgml-1. [ABSTRACT FROM AUTHOR]

In order to determine the insecticidal potential against Aedes aegypti of the essential oil of the rhizomes of Curcuma longa L., this was extracted by hydrodistillation and its quality evaluated by organoleptic and physicochemical parameters such as refractive index (1,4969), optical rotation (-33,412), density (0,937 3 g/mL) and its ultraviolet and infrared absorption spectra. The oil showed significant larvicidal activity with LC50 lower than 100 mg/L and by the methodologies of bottles and impregnated papers it produced 100% of the knockdown of adult mosquitoes at doses of 50 mg/mL. The processing of the bioassay data was performed using the Probit test of the SPSS statistical program (version 11 for Windows). The results obtained constitute the first characterization of the essential oil of C. longa cultivated in the eastern Cuban region and its insecticidal activity, an ecological and effective alternative for the control of Aedes aegypti mosquitoes. [ABSTRACT FROM AUTHOR]

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales 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.)

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru 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.)

Excessive use of agrochemicals can cause environmental pollution and development of resistant pests. For this reason, biocidal plants are used as an alternative for integrated pest control. The toxicity of the essential oils of Bursera graveolens (Burseraceae), Lepechinia meyenii (Lamiaceae) and Myrtus communis (Myrtaceae) on the eggs and larvae of the first instar of Chrysoperla externa, Chrysoperla asoralis and Ceraeochrysa cincta (Neuroptera: Chrysopidae) was evaluated under conditions from laboratory. Dilutions with 70% ethyl alcohol of B. graveolens and 20% L. meyenii, 10% and 5% were used; and with Dimethyl sulfoxide (DMSO) of M. communis at 2%, 1%, 0.5%, 0.25% and 0.125%, in a period of ~ 120 h for egg hatching, and 24 h and 48 h of exposure to assess residual contact toxicity. The toxicity parameters of LOEC (lowest concentration with observed effect), NOEC (concentration without observed effect) and LC50 (mean lethal concentration) were calculated. The essential oils of B. graveolens, L. meyenii and M. communis had an effect on the hatching of the eggs of the three chrysopids. B. graveolens and L. meyenii have little or no effect on the larvae of the studied neuroptera; while the essential oil of M. communis did show larvicidal effect. Essential oils can be used in integrated pest management. [ABSTRACT FROM AUTHOR]

The ecosystem services are of vital importance for the socioeconomic development of a region and even more when a large part of its population depends on them, as is the case of the region of the Colombian Orinoquia, and more specifically the department of Meta. The oleoresin of copaiba is a nontimber forest product indigenous to tropical zones found in the department of Meta, which has benefits for human health. The purpose of this article is to make Copaiba’s oleoresin (Copaifera spp.) derived from supply and cultural services known as a socioeconomic alternative for the department of Meta through a comparison of its scientifically proven medicinal uses and those attributed by the rural community of the department. In the study it was found that a large part of the properties attributed by the rural community have already been studied with positive results, besides it was proved that it is not only used medicinally in humans but also in animals, with dosage ranging from 3 to 20 drops daily and dermal application. It is then stated that the oleoresin of copaiba has mainly beneficial properties for the dermal and gastric system, evidencing that a large percentage that consumes it is an adult population in dosages of 15 drops per day and superficial dermal applications. [ABSTRACT FROM AUTHOR]

Copyright of Bistua: Revista de la Facultad de Ciencias Básicas is the property of Facultad de Ciencias Basicas de la Universidad de Pamplona 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.)

Copyright of Revista Colombiana de Investigaciones Agroindustriales is the property of Revista Colombiana de Investigaciones Agroindustriales del Centro Agropecuario Sena Buga 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.)

Essential oils (AE) are used as preservatives in the food industry, due to their physicochemical characteristics and antioxidant activity. The aim of this research was to determine yield (R), specific gravity (GE), refractive index (IR), antioxidant activity (AA) and chemical composition of AE of huacatay (Tagetes minuta), poleo (Minthostachys mollis), rosemary (Rosmarinus officinalis L.) and sachaculantro (Eryngium foetidum L.), plants collected from 52 districts of the Amazon region, Peru. For each AE, fixed-effect variance analysis was used with three replications and cluster analysis. The antioxidant activity was determined with the free radical method 2,2-diphenyl-1-picrylhydracil (DPPH) and its most abundant components were identified with headspace gas chromatography coupled to mass spectrometry. The differences in R, GE and IR were significant between districts. The AA showed no significant difference between the districts, but between the plants itself. Among the most abundant volatile components, 1-adamantanol (44.42%) was identified in huacatay, β-phellandrene (20.85%) in poleo, β-myrcene (34.59%) in rosemary and α-pinene (23.41%) in sachaculantro. It is concluded that the geographic location significantly affects the physicochemical properties of AE. [ABSTRACT FROM AUTHOR]