13 results on '"Quiñones-Cerna, Claudio"'
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2. Efficient Chitin Extraction from Shrimp Exoskeletons through Single-Step Fermentation by Pseudomonas aeruginosa QF50 and Serratia sp. QCS23
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Quiñones-Cerna, Claudio, primary, Rodríguez-Soto, Juan Carlos, additional, Hurtado-Butrón, Fernando, additional, Centeno-Calderón, Luis, additional, Mejia-Ruedell, Rosa, additional, López-Quiroz, Eulalio, additional, Gálvez-Rivera, Julieta, additional, and Ugarte-López, Wilmer, additional
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- 2024
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3. Efficacy of Indigenous Bacteria in the Biodegradation of Hydrocarbons Isolated from Agricultural Soils in Huamachuco, Peru.
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Quiñones-Cerna, Claudio, Castañeda-Aspajo, Alina, Tirado-Gutierrez, Marycielo, Salirrosas-Fernández, David, Rodríguez-Soto, Juan Carlos, Cruz-Monzón, José Alfredo, Hurtado-Butrón, Fernando, Ugarte-López, Wilmer, Gutiérrez-Araujo, Mayra, Quezada-Alvarez, Medardo Alberto, Gálvez-Rivera, Julieta Alessandra, and Esparza-Mantilla, Mario
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SOIL remediation ,HAZARDOUS waste sites ,AGRICULTURE ,SOIL solutions ,PETROLEUM - Abstract
Pollution from crude oil and its derivatives poses a serious threat to human health and ecosystems, with accidental spills causing substantial damage. Biodegradation, using microorganisms to break down these contaminants, presents a promising and cost-effective solution. Exploring and utilizing new bacterial strains from underexplored habitats could improve remediation efforts at contaminated sites. This study aimed to evaluate the hydrocarbon biodegradation capacity of bacteria isolated from agricultural soils in Huamachuco, Peru. Soil samples from Oca crops were collected and bacteria were isolated. Biodegradation assays were conducted using diesel as the sole carbon source in the Bushnell Haas Mineral medium. Molecular characterization of the 16S rRNA gene identified four strains. Diesel biodegradation assays at 1% concentration were performed under agitation conditions at 150 rpm and 30 °C, and monitored on day 10 by measuring cellular biomass (OD
600 ), with hydrocarbons analyzed by gas chromatography. The results showed Pseudomonas protegens (PROM2) achieved the highest efficiency in removing total hydrocarbons (91.5 ± 0.7%). Additionally, Pseudomonas citri PROM3 and Acinetobacter guillouiae ClyRoM5 also demonstrated high capacity in removing several individual hydrocarbons. Indigenous bacteria from uncontaminated agricultural soils present a high potential for hydrocarbon bioremediation, offering an ecological and effective solution for soil decontamination. [ABSTRACT FROM AUTHOR]- Published
- 2024
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4. Bioconversion of Agroindustrial Asparagus Waste into Bacterial Cellulose by Komagataeibacter rhaeticus
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Quiñones-Cerna, Claudio, primary, Rodríguez-Soto, Juan Carlos, additional, Barraza-Jáuregui, Gabriela, additional, Huanes-Carranza, Johnny, additional, Cruz-Monzón, José Alfredo, additional, Ugarte-López, Wilmer, additional, Hurtado-Butrón, Fernando, additional, Samanamud-Moreno, Fanny, additional, Haro-Carranza, David, additional, Valdivieso-Moreno, Stefany, additional, Salirrosas-Fernández, David, additional, and Quiñones, Marisol Contreras, additional
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- 2024
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5. Use of Enzymatic Hydrolysate from Agroindustrial Asparagus Waste as Substrate for the Production of Polyhydroxyalkanoate by Bacillus thuringiensis.
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Kevin Tello-Cruzado, Bryan, Azañedo-Vargas, Maria, Eduardo Quiñones-Cerna, Claudio, Fuentes-Olivera, Anthony, Carlos Rodríguez-Soto, Juan, Alberto Quezada-Alvarez, Medardo, and Alfredo Cruz-Monzon, José
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BACILLUS thuringiensis ,CIRCULAR economy ,LIGNOCELLULOSE ,BIOCHEMICAL substrates ,BACILLUS (Bacteria) - Abstract
Polyhydroxyalkanoate (PHA) has unique physicochemical and mechanical properties like conventional plastics; however, its high production cost makes it unsuitable for commercial use. Therefore, the purpose of the present study is to use low-cost and bioavailable raw materials such as agro-industrial waste of asparagus husk, as substrate for obtaining PHA by Bacillus thuringiensis. The proximal characteristics and structural carbohydrates of the waste were previously determined using HPLC. The pretreatment conditions were optimized using a Plackett-Burman design and response surface of the central compounds, evaluating temperature, %NaOH, time, % solid/liquid and solvent. Likewise, the enzymatic hydrolysates of the optimal conditions of the pretreatment were used, using an enzymatic solution with cellulase activity at 45°C at 100 rpm for 72 h. To produce PHA, a mineral-based medium, supplemented with enzymatic hydrolysate from the optimal pretreatment, was utilized. This study examined the effects of varying initial inoculum concentrations (0.25, 0.5, and 0.75 g/L) and percentages of enzymatic hydrolysate supplement (%, v/v). The process was conducted at 30°C and agitated at 125 rpm for 72 h. Maximum production of PHA was obtained with 0.138 g/L from an initial inoculum of 0.75 g/L of B. thuringiensis and a 47% supplement of the enzymatic hydrolysate. The PHA biopolymer was identified by its chemical characteristics by FTIR and correlated by HPLC with a standard. This study contributes to the use of agro-industrial waste to obtain biologically-based bioplastic through a low-cost process aligned with the circular economy strategy. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Production of Bioferments from Artichoke and Asparagus Waste with High Unicellular Protein and Carotenoid Content Using R. mucilaginosa
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De La Cruz-Noriega, Magaly, primary, Benites, Santiago M., additional, Rojas-Flores, Segundo, additional, Quiñones-Cerna, Claudio, additional, Terrones Rodríguez, Nicole, additional, Robles-Castillo, Heber, additional, Huanes-Carranza, Johnny, additional, and Mendoza-Villanueva, Karol, additional
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- 2023
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7. Optimization of Total Carotenoid Production by Rhodotorula mucilaginosa from Artichoke Agroindustrial Waste Using Response Surface Methodology
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Terrones Rodríguez, Nicole Alejandra, primary, Quiñones-Cerna, Claudio Eduardo, additional, Robles Castillo, Heber Max, additional, Cruz-Monzon, Jose Alfredo, additional, Hurtado Butrón, Fernando Javier, additional, and Rodríguez Soto, Juan Carlos, additional
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- 2023
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8. Isolation and Characterization of Yarrowia lipolytica YQ22 from Diesel Samples for Phenol Biodegradation.
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Baldera-Saavedra, Jayson, Eduardo Quiñones-Cerna, Claudio, Sánchez-Vásquez, Sandra, Arévalo-Gonzales, Yanella, Terrones-Rodríguez, Nicole, Carlos Rodríguez-Soto, Juan, Max Robles-Castillo, Heber, De La Cruz-Noriega, Magaly, Benites-Castillo, Santiago M., Baldera-Guayambal, Lucio, Alfredo Cruz-Monzon, Jose, and Rojas-Flores, Segundo
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PHENOL ,PHENOLS ,HIGH performance liquid chromatography ,BIODEGRADATION ,AGAR ,RIBOSOMAL DNA - Abstract
Phenolic compounds have gained international interest due to their carcinogenic, toxic, and bioaccumulative properties, causing adverse effects in both animals and humans. As a result, there is a growing interest in finding alternative and eco-friendly treatment routes for phenol by exploring new microbial cultures with potential adaptation and biodegradation capabilities. In this study, the phenol removal efficiency of Yarrowia lipolytica YQ22 under laboratory conditions was determined. The YQ22 strain was obtained from diesel samples from a fuel station in Trujillo, Peru, isolated through serial dilutions on Sabouraud agar, and identified through its morphological characteristics using microscopy and molecular analysis by polymerase chain reaction of the ribosomal DNA internal transcribed spacer (ITS) and 5.8S regions. In the treatment, the effect of pH (5, 6 and 7) and temperature (25°C, 30°C and 35°C) on phenol removal with 2% (v/v) inoculum of Yarrowia lipolytica from 48-hour growth was evaluated. Phenol concentration was measured by high-performance liquid chromatography. A maximum phenol removal percentage of 61.18 was obtained for YQ22 at 30°C, pH 5 and 120 rpm during 48 hours. These findings demonstrate the ability of Yarrowia lipolytica to remove phenol and suggest its potential use in the field of bioremediation of phenolic compounds and their derivatives. [ABSTRACT FROM AUTHOR]
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- 2024
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9. Efecto genotóxico de ranitidina sobre el ADN de eritrocitos policromáticos de Rattus novergicus cepa Holtzman
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Quiñones-Cerna, María Elvira, Rodríguez-Castañeda, Judith Stefany, Amésquita-Cardenas, María Leticia, Quiñones-Cerna, Claudio Eduardo, and Esparza-Mantilla, Mario Rodrigo
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Ranitidine ,micronuclei ,rats ,genotoxicity ,polychromatic erythrocytes ,Ranitidina ,micronúcleos ,ratas ,genotoxicidad ,eritrocitos policromáticos - Abstract
Background: Ranitidine is a drug that is associated with mutagenesis by generating genetic alterations and / or cell carcinogenesis, but its genotoxicity in polychromatic erythrocytes is unknown. Therefore, the effect of ranitidine on DNA of micronucleated polychromatic erythrocytes (EPC) in albino rats (Rattus norvegicus, Holtzman strain) was researched by the micronucleus test. Materials and methods: Four groups of rats were studied: negative control with physiological saline solution (0.5 ml for 15 days); positive control with cyclophosphamide (dose 50 mg / kg for 2 days) and two experimental groups treated with ranitidine (doses 2 and 4 mg / kg for 15 days). The rats were euthanized and cytological preparations were obtained by 30 min staining in 5% giemsa. Results: An increase in the size and significant increase in the number of micronuclei in the EPC was found in the experimental groups of 285.27 ± 10.25, compared to the negative control of 70.38 ± 6.47. The genotoxicity index was three times higher in the experimental groups (12.10 ± 0.49; 2 mg / kg NRT and 14.26 ± 0.51; 2 mg / kg NRT) in relation to the negative control (3.52 ± 0 , 32). Conclusions: Ranitidine generates an increasing stimulus of the genotoxic index with a high frequency of micronuclei in EPC of R. norvegicus strain Holtzman. Introducción: La ranitidina es un fármaco que esta asociado a mutagénesis por generar alteraciones genéticas y/o carcinogenesis celular pero se desconoce su rol a nivel genotóxico en eritrocitos policromáticos. Por tanto, se investigó el efecto de ranitidina sobre el ADN en eritrocitos policromáticos micronucleados (EPC) en ratas albinas (Rattus novergicus, cepa Holtzman) mediante el test de micronúcleos. Materiales y métodos: Se estudiaron cuatro grupos de ratas: control negativo con suero salino fisiológico (0,5 ml por 15 días); control positivo con ciclofosfamida (dosis 50 mg/kg por 2 días) y dos grupos experimentales tratados con ranitidina (dosis 2 y 4 mg/kg por 15 días). Las ratas se sometieron a eutanasia y se obtuvo preparados citológicos con tinción de giemsa 5 % por 30 min. Resultados: Se encontró un aumento del tamaño e incremento significativo del número de micronúcleos en los EPC de 285 ± 10 de los grupos experimentales con una dosis de 4 mg/kg; así mismo, en comparación al control negativo con 70 ± 6. El índice de genotoxicidad fue tres veces mayor en los grupos experimentales (12,10 ± 0.49; 2 mg/kg RNT y 14,26 ± 0,51; 2 mg/kg RNT) en relación al control negativo (3,52 ± 0,32). Conclusiones: La ranitidina genera un estímulo creciente del índice genotóxico con elevada frecuencia de micronúcleos en EPC de R. norvegicus cepa Holtzman.
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- 2022
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10. Residuos agroindustriales de alcachofa y espárrago como sustrato para la producción de celulosa bacteriana por Komagataeibacter xylinus
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Quiñones Cerna, Claudio Eduardo and Alcántara Campos, José Carlos
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Celulosa ,Espárrago ,Alcachofa ,Fermentación ,Komagataeibacter ,Residuos ,purl.org/pe-repo/ocde/ford#4.04.01 [http] - Abstract
El presente trabajo de investigación se realizó con el objetivo de obtener celulosa bacteriana por Komagataeibacer xylinus a partir de los residuos hidrolizados de brácteas de alcachofa y peladilla de espárrago. Los residuos agroindustriales recolectados se lavaron, desinfectaron y se secaron a 60 ºC por 6 h, finalmente se molió y tamizó a 0.45 mm. A su vez, se caracterizó por FTIR y sus azúcares estructurales por HPLC. Se evaluó la obtención máxima de azúcares reductores a partir de la hidrolisis de los residuos agroindustriales. Se evaluó la producción de celulosa bacteriana por Komagataeibacter xylinus en medios de cultivo con diferentes concentraciones de azúcares reductores de los residuos hidrolizados como fuente de carbono en medio base Helstrin- Schrianm (sin glucosa), durante 7, 14 y 21 días a 30 ºC en condiciones estáticas. A partir del residuo hidrolizado de brácteas de alcachofa, se obtuvo un rendimiento volumétrico de celulosa bacteriana máximo de 1.59 g/L a partir de 12.36 g/L ± 0.81 g/L de azúcares reductores durante 21 días y una tasa de producción de celulosa bacteriana máximo de 0.21 ± 0.04 g/L.d a partir de 12.36 g/L ± 0.81 g/L durante 7 días. A su vez, del residuo hidrolizado de peladilla de espárrago se obtuvo 1.73 ± 0.32 g/L CB a 21 días a partir de 13.53 ± 0.36 g/L de azúcares reductores a 21 días y una tasa de producción de 0.15 ± 0.05 g/L.d CB a 7 días a partir 13.53 ± 0.36 g/L de azúcares reductores. Las membranas de celulosa bacteriana obtenida se caracterizaron por espectroscopía infrarrojo por transformada de Fourier (FTIR), Difractometría de rayos X (DRX), calorimetría diferencial de barrido (DSC) y microscopía de absorción atómica (AFM). Los resultados obtenidos confirmaron que los residuos de brácteas de alcachofa y peladilla de espárrago podría reemplazar a los sustratos costosos para la producción de celulosa bacteriana por Komagataeibacter xylinus con notables propiedades físicas, químicas y morfológicas. The present research work was carried out with the objective of obtaining bacterial cellulose by Komagataeibacer xylinus from the hydrolyzed residues of artichoke bracts and asparagus peel. The collected agro-industrial waste was washed, disinfected and dried at 60ºC for 6 h, finally ground and sieved at 0.45 mm. In turn, it was characterized by FTIR and its structural sugars by HPLC. The maximum obtaining of reducing sugars from the hydrolysis of agroindustrial residues was evaluated. The production of bacterial cellulose by Komagataeibacter xylinus was evaluated in culture media with different concentrations of reducing sugars of the hydrolyzed residues as a carbon source in Helstrin-Schrianm base medium (without glucose), for 7, 14 and 21 days at 30 ºC in static conditions. From the hydrolyzed residue of artichoke bracts, a maximum bacterial cellulose volumetric yield of 1.59 g / L was obtained from 12.36 g / L ± 0.81 g / L of reducing sugars for 21 days and a bacterial cellulose production rate maximum of 0.21 ± 0.04 g / Ld from 12.36 g / L ± 0.81 g / L for 7 days. In turn, from the hydrolyzed asparagus peel residue, 1.73 ± 0.32 g / L CB was obtained at 21 days from 13.53 ± 0.36 g / L of reducing sugars at 21 days and a production rate of 0.15 ± 0.05 g / Ld CB at 7 days from 13.53 ± 0.36 g / L of reducing sugars. The bacterial cellulose membranes obtained were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), differential scanning calorimetry (DSC) and atomic absorption microscopy (AFM). The results obtained confirmed that the residues of artichoke bracts and asparagus peladilla could replace the expensive substrates for the production of bacterial cellulose by Komagataeibacter xylinus with remarkable physical, chemical and morphological properties.
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- 2021
11. Bioelectroremediation of hexadecane in electrical cells containing Aspergillus niger immobilized in alginate.
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Saavedra, Jayson Baldera, Noriega Pérez, Lisbet Judith, Quiñones Cerna, Claudio Eduardo, Cruz Monzón, José Alfredo, Hurtado Butrón, Fernando Javier, and Mantilla, Mario Esparza
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ASPERGILLUS niger ,ALGINIC acid ,SANDY loam soils ,POLLUTANTS ,BIODEGRADATION of petroleum ,COPPER electrodes - Abstract
Copyright of Revista Ambiente e Água is the property of Revista Ambiente e Agua 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
- 2022
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- View/download PDF
12. Efecto genotóxico de ranitidina sobre el ADN de eritrocitos policromáticos de Rattus novergicus cepa Holtzman.
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Elvira Quiñones-Cerna, María, Stefany Rodríguez-Castañeda, Judith, Leticia Amésquita-Cardenas, María, Eduardo Quiñones-Cerna, Claudio, and Rodrigo Esparza-Mantilla, Mario
- Abstract
Copyright of Revista del Cuerpo Médico del Hospital Nacional Almanzor Aguinaga Asenjo is the property of Cuerpo Medico del Hospital Nacional Almanzor Aguinaga Asenjo 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
- 2022
- Full Text
- View/download PDF
13. Efecto de los flavonoides extraídos de Equisetum bogotense (Equisetaceae) sobre los niveles de TNF-α en la inflamación inducida experimentalmente en Mus musculus BALB/c
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Quiñones Cerna, Claudio, Laboratorio de Inmunología, Escuela de Microbiología y Parasitología, Universidad Nacional de Trujillo, Av. Juan Pablo II, Trujillo 13011, Lucas Segura, Natali, Benites Plasencia, Erick, Calixto Pisconte, Favio, Payano López, Waldo, and Luján Velásquez, Manuela
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Equisetum bogotense, TNF, inflamación, Mus musculus, elisa, flavonoides - Abstract
Equisetum arvense (Equisetaceae) es una planta que posee efectos antiinflamatorios debido a suscompuestos fitoquímicos como los flavonoides, los cuales actúan a nivel de citocinas proinflamatorias,principalmente el TNF-α. Sin embargo, se conocen otras especies de Equisetum en el Perú, de lascuales no se ha demostrado dichos efectos. Una de estas especies es Equisetum bogotense, de la cualse extrajeron los flavonoides y fueron inoculados en Mus musculus BALB/c. Estos flavonoidesactuaron sobre los niveles de TNF-α producidos en la inflamación inducida experimentalmente enMus musculus BALB/c mediante la inoculación de carragenanos. Para la cuantificación de los nivelesde TNF-α se realizó la prueba de ELISA, obteniéndose que los flavonoides redujeron ligeramente losniveles de TNF-α, sin embargo, no hubo diferencia significativa entre las concentraciones utilizadas.
- Published
- 2019
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