Oscar Arango Bedoya - Academia.edu (original) (raw)

Papers by Oscar Arango Bedoya

Biotecnologia En El Sector Agropecuario Y Agroindustrial, Dec 1, 2009

Debido a sus ventajas respecto a los procesos aerobios en terminos demayor grado de estabilizacio... more Debido a sus ventajas respecto a los procesos aerobios en terminos demayor grado de estabilizacion de las aguas residuales, bajo crecimientode biomasa y requerimientos nutricionales, produccion de metano y norequerimiento de oxigeno, la digestion anaerobia es una alternativa viablepara el tratamiento de las aguas residuales de la industria lactea. En estainvestigacion se evaluo el rendimiento y capacidad de un reactor anaerobiode lecho de fangos (UASB) para remover la carga de materia organica con-tenida en suero de queseria. El reactor UASB fue operado con un tiempo deretencion hidraulica (TRH) de 1,3 dias y velocidades de carga organica entre1,7 a 18,5 g de DQO/L.d. Los maximos niveles de reduccion de la demandaquimica de oxigeno (DQO) y de solidos totales volatiles (STV) alcanzadosfueron 98% y 97,2% respectivamente, con una velocidad de carga organicaen el reactor de 9,6 g DQO/L.d, observandose una reduccion en la eficienciade remocion de la DQO hasta niveles de 77% cuando la carga organica sellevo a 18,6 g DQO/L.d. La produccion maxima de gas metano generado apartir del suero de queso estudiado fue de 0,27 L CH4/g DQO afluente, conun contenido de metano en el biogas de 56%. Con base en los resultadosse puede concluir que es recomendable el uso de reactores UASB para eltratamiento anaerobio de sueros de queseria, obteniendose un efluente debuena calidad para su descarga final.

Pesquisa Agropecuaria Brasileira, Dec 28, 2020

The objective of this work was to evaluate the physicochemical properties of Colombian cape goose... more The objective of this work was to evaluate the physicochemical properties of Colombian cape gooseberry (Physalis peruviana) hybrids and to select those with the highest fruit quality based on a selection index. A total of 36 cape gooseberry hybrids obtained from crossings between nine double haploid lines from the Tibaitatá Research Center of Colombian Corporation for Agricultural Research were evaluated. The trials were conducted in a randomized complete block design, in four locations (environments), corresponding to the municipalities of Ipiales, Gualmatán, Puerres, and Pasto, in the department of Nariño, Colombia. The following variables were evaluated: cracking percentage (CP), fruit weight with calyx (FWC), juice content (JC), total titratable acidity (TTA), total soluble solids (TSS), maturity index (MI), firmness (F), ascorbic acid (AA), and respiration rate (RR). CP was affected by the environment, showing lower values in Ipiales, Gualmatán, and Puerres. The hybrid factor significantly affected all assessed variables, except RR. The selected hybrids showed higher values for TSS, MI, FWC, and AA, besides lower values for CP and RR. The 3x9 hybrid stands out for presenting averages that are high for AA (42.59 mg 100 g-1) and MI (7.91) and low for RR (49.2 mg CO 2 kg-1 h-1).

Abstract: The objective of this work was to evaluate the physicochemical properties of Colombian ... more Abstract: The objective of this work was to evaluate the physicochemical properties of Colombian cape gooseberry (Physalis peruviana) hybrids and to select those with the highest fruit quality based on a selection index. A total of 36 cape gooseberry hybrids obtained from crossings between nine double haploid lines from the Tibaitatá Research Center of Colombian Corporation for Agricultural Research were evaluated. The trials were conducted in a randomized complete block design, in four locations (environments), corresponding to the municipalities of Ipiales, Gualmatán, Puerres, and Pasto, in the department of Nariño, Colombia. The following variables were evaluated: cracking percentage (CP), fruit weight with calyx (FWC), juice content (JC), total titratable acidity (TTA), total soluble solids (TSS), maturity index (MI), firmness (F), ascorbic acid (AA), and respiration rate (RR). CP was affected by the environment, showing lower values in Ipiales, Gualmatán, and Puerres. The hybri...

Revista Colombiana de Ciencias Hortícolas, 2021

The cape gooseberry is the second most exported fruit in Colombia. There are, however, little inf... more The cape gooseberry is the second most exported fruit in Colombia. There are, however, little information available on genetic improvement processes and limited research on the fruit components. The objective of this study was to characterize the fruits of 36 hybrids, obtained from double haploid cape gooseberry lines from the Tibaitatá Research Center of the Colombian Corporation for Agricultural Research. Hybrids with potential uses in transformation processes or for fresh consumption were identified using Hierarchical Cluster (HC) and Principal Component Analysis (PCA) with 20 physical, physicochemical, compositional, and physiological fruit descriptors, obtained from four trials in the Andean region of southern Colombia. According to the PCA, three components represented 73.6% of the total variability: postharvest (37.5%), sensory and nutritional quality (21.3%) and cracking percentage (14.8%). Six conglomerates were identified. Groups two, four, and six had aptitude for fresh c...

El objetivo de esta tesis fue evaluar la aplicacion de un sensor de dispersion de luz de infrarro... more El objetivo de esta tesis fue evaluar la aplicacion de un sensor de dispersion de luz de infrarrojo proximo para la caracterizacion y monitorizacion de procesos en la elaboracion de derivados lacteos bajos en grasa, especificamente en queso fresco y yogur firme con adicion de inulina como sustituto de grasa. Se llevaron a cabo cuatro experimentos. En los dos primeros se estudio la coagulacion de geles enzimaticos, evaluando el efecto de la temperatura y de las concentraciones de inulina, grasa, proteina y calcio sobre los parametros de dispersion de luz relacionados con la coagulacion y la sineresis. A partir de la informacion generada se desarrollaron modelos de prediccion de tiempos de coagulacion y de corte, de la velocidad de la cinetica de desuerado y del rendimiento de la cuajada. En el tercer experimento se validaron los modelos de prediccion obtenidos anteriormente y se estudio la capacidad de retencion de agua de los geles. En el ultimo experimento se evaluo la aplicabilida...

Biotecnología en el Sector Agropecuario y Agroindustrial, 2009

Chachafruto (Erythrina edulis) is a leguminous plant with a wide range of uses, from the human di... more Chachafruto (Erythrina edulis) is a leguminous plant with a wide range of uses, from the human diet (seeds), animal diet (forage) to the recovery of nitrogen content of the soil. Its principal function is related to the food security due to its high content of proteins, plus vitamins and minerals. In this research, the extraction yield of protein from chachafruto seeds flour was studied through the method of solvent extraction. The effect of the factors flour-solvent relation and dissolution time were analyzed. Protein analysis was conducted through the Kjeldahl method. In the chachafruto flour 8.37% of humidity and 18.4% of protein were obtained. According to their level of solubility in different solvents, the major fractions obtained in the flour protein were glutelins and albumins. The relationship flour-solvent and the dissolution time had significant effects (P < 0.001) in the extraction yield. The maximum 62% yield was obtained with a time of 60 min and a relationship of f...

Por último a Natalia y a Javier, por ser toda mi alegría. Os quiero.

The purpose of this research was to evaluate the effect of the origin (4 localities), the plants ... more The purpose of this research was to evaluate the effect of the origin (4 localities), the plants leaves age (young and mature) and the season (rainy and dry season) on the essential oils (EOs) yield and thymol content of Lippia origanoides growing wild in the Alto Patía region (south-west of Colombia). The extractions were performed through microwave-assisted hydrodistillation technique (MWHD) and the EOs were analyzed by gas chromatography. Yields of EOs varied between 2.5 and 3.3% and were obtained where the origin factor showed statistical differences (P< 0.05) over the yielding. Taking into account the thymol content, differences related to the season were observed. The highest thymol content in the EOs was obtained in the dry season. The major compounds identified in the EOs were thymol (50.8 81.6%), ρ-cymene (7.5 19.5%) and γ-terpinene (2.3 7.4%).

Información tecnológica, 2020

El objetivo de este estudio fue evaluar el contenido de fenoles totales (FT) y actividad antioxid... more El objetivo de este estudio fue evaluar el contenido de fenoles totales (FT) y actividad antioxidante de dos variedades de papas (Solanum phujera) nativas cultivadas al sur de Colombia. Las papas nativas tienen un gran potencial debido a su alto contenido de compuestos bioactivos. Se realizaron dos diseños experimentales, el primero para determinar el mejor solvente para extraer los FT y el segundo para evaluar el efecto del uso de ultrasonido en la extracción de FT. La actividad antioxidante se evaluó por los métodos de ABTS + y DPPH. El mejor solvente fue acetona al 70 % (v/v). La utilización de ultrasonido aumentó 118-195 % la extracción de FT. El contenido de FT fue mayor en la piel que en la pulpa. Se concluye que las variedades de S. phujera estudiadas son una buena fuente de compuestos antioxidantes, pero se requiere identificar y cuantificar los compuestos presentes, tales como antocianinas.

Biotecnologia En El Sector Agropecuario Y Agroindustrial, 2008

Biotecnologia En El Sector Agropecuario Y Agroindustrial, Dec 1, 2012

Se estudio el proceso de extraccion por arrastre con vapor a escala de planta piloto del aceite e... more Se estudio el proceso de extraccion por arrastre con vapor a escala de planta piloto del aceite esencial de oregano silvestre (Lippia origanoides H.B.K) de la region del Alto Patia (Colombia) utilizando la metodologia de superficie de respuesta. Los factores estudiados fueron el tiempo de extraccion (1-3 horas), la densidad del lecho (60-100 g/L) y la presion de extraccion (1-3 PSI). Las variables de respuesta fueron el rendimiento de extraccion y el contenido de timol del aceite esencial. La composicion de los aceites esenciales fue determinada mediante cromatografia de gases. Con respecto al rendimiento se obtuvo que solamente la densidad del lecho presento un efecto estadisticamente significativo (P< 0,05) y sobre el contenido de timol (componente mayoritario encontrado), unicamente el factor presion tuvo un efecto significativo (P< 0,05). Las condiciones optimas de extraccion obtenidas con el modelo matematico fueron: tiempo de 3,7 h, densidad del lecho de 113 g/L y presion de 3,7 PSI, bajo las cuales se estima que se podria obtener un rendimiento de extraccion 3,4 % y uncontenido de timol de 91,9%.

Acta Agronomica, Jul 1, 2012

Efecto del origen, la época de recolección y la edad de las hojas en el rendimiento y el contenid... more Efecto del origen, la época de recolección y la edad de las hojas en el rendimiento y el contenido de timol de aceites esenciales de Lippia origanoides H.B.K. Effect of origin, harvest time and leaves age on the yield and thymol content of essential oils from Lippia origanoides H.B.K.

Due to its advantages over aerobic process in terms of higher degree of wastewater stabilization,... more Due to its advantages over aerobic process in terms of higher degree of wastewater stabilization, lower microbial yield and nutrient requirement, no oxigen requirement and methane production, anaerobic digestion presents as a viable alternative for dairy industry wastewater treatment. In this investigation the performance and capacity of an upflow anaerobic blanket reactor (UASB) treating whey for the organic matter removal were evaluated. The UASB reactor was operated at a hydraulic retention time (HRT) of 1,3 d and organic loading rates ranging from 1.7 to 18.5 g COD/L.d. The maximum total chemical oxygen demand (COD) and Total Volatile Solids (TVS) reduction was 98 and 97,2 % respectively occurred at the loading rates of 9.6 g COD/L.d. The COD removal efficiency was reduced to 77% when the organic loading rate was increasing to 18,6 g COD/L.d. The maximum anaerobic methane generation for the cheese whey studied was found to be 0,27 l CH4/g COD influent and the biogas methane cont...

The tendency toward a healt and balanced feeding, wich include natural and beneficent elements is... more The tendency toward a healt and balanced feeding, wich include natural and beneficent elements is growing. Was stablished the use of yacon (Smallanthus sonchifolius (Poepp. & Endl.)), an uncultivated plant of the andina región in Nariño, wich for his high level of inulin, fructoligosaccharide use in the food and farmaceutic industry for the edulcorant manufacture for diabetics and as fiber in refined food. This estudy report the optimization of the solid-liquid extraction process, with hot water, of inulin provided by yacon root. The quantification of inulin in the extract is made through refractometry. Several combinations of time, temperature and solvent-raw material relationship were used in the experimental design using a 23 central compaind design plus star points. Using the response surface methodology is determined that it will be able to gain an excellent output of 20.7% of inulin under extraction conditions of 23 min to 82.2 °C and solvent-raw material relationship of 4.5 l...

La inulina es un oligosacarido no digerible que posee demostrados efectos sobre la salud. Muchos ... more La inulina es un oligosacarido no digerible que posee demostrados efectos sobre la salud. Muchos estudioshan evidenciado que la inulina reduce el riesgo de arterioesclerosis, incrementa la biodisponibilidadde varios minerales, reduce el riesgo de enfermedades gastrointestinales, reduce los niveles de colesteroly trigliceridos y controla los niveles de glucosa en la sangre, reduce la liberacion de toxinas ycarcinogenos y estimula el sistema inmune. Dichos efectos, junto con la propiedad de proporcionartextura y mejorar las caracteristicas reologicas y nutricionales de los alimentos, hacen que la inulinapueda ser considerada como un alimento funcional. En esta revision bibliografica se abordan losconceptos de fibra alimentaria, las caracteristicas de la inulina y sus fuentes, su funcionalidad tecnologicay uso en la industria de alimentos, ademas de una descripcion detallada sobre las evidenciasde sus efectos beneficos en la salud humana.