The objective of this research was to determine the oxidative stability index (OSI) in virgin oil seed Sesamum indicum L. (Sesame) previously extracted by cold pressing, clarified by centrifugation and stored under nitrogen atmosphere and cooling on. The OSI was determined by accelerated Rancimat test, it was used for 3.0 ± 0.1 g of sample temperature parameters (110, 130 and 150 °C) and air flow (15, 20 and 25 L/h). Applying the Rancimat test, it was found by ANOVA (p < 0.05) that the influence of temperature on the OSI was highly significant, whereas the only air flow was significant. By extrapolation method, values were calculated at usual temperatures OSI oil storage (25 °C) to give stability times 214, 242 and 222 days, also the activation energy of the oxidation reaction of sesame oil for different air flows, is 97.28, 98.79 and 96.86 kJ / mol for 15, 20 and 25 L/h respective...

The objective of this research was to determine the oxidative stability index (OSI) in virgin oil seed Sesamum indicum L. (Sesame) previously extracted by cold pressing, clarified by centrifugation and stored under nitrogen atmosphere and cooling on. The OSI was determined by accelerated Rancimat test, it was used for 3.0 ± 0.1 g of sample temperature parameters (110, 130 and 150 °C) and air flow (15, 20 and 25 L/h). Applying the Rancimat test, it was found by ANOVA (p < 0.05) that the influence of temperature on the OSI was highly significant, whereas the only air flow was significant. By extrapolation method, values were calculated at usual temperatures OSI oil storage (25 °C) to give stability times 214, 242 and 222 days, also the activation energy of the oxidation reaction of sesame oil for different air flows, is 97.28, 98.79 and 96.86 kJ / mol for 15, 20 and 25 L/h respective...

In the present investigation, the physicochemical characteristics, composition of fatty acids, tocopherols and phytosterols of the oil obtained from granadilla and pumpkin seeds were determined using supercritical CO2 technology. The fruits of granadilla (Passiflora ligularis Juss) and pumpkin (Cucurbita maxima) were obtained and the seeds were extracted, then dehydrated at 60 ° C x 24 hours and subsequent grinding to obtain the oil in a supercritical fluid extractor under the conditions of 350 bar and 50 ° C and CO2 flow of 3mL / min. The composition of fatty acids were analyzed, in the saponifiable fraction of the oils, arachidonic and oleic acid and 82.37 % of unsaturated fatty acids in granadilla seed and oleic, Arachidonic and linoleic acid and 76.01 % of fatty acids were found unsaturated in pumpkin seed and in the unsaponifiable fraction presented α-Tocopherol of 17.85 μg / g ...

The present work search the influence of the Edward and Kent mango varieties, in degrees of maturity partially ripe and ripe respectively, on the antioxidant capacity and oxidative stability of mango seed oil (Mangifera indica L.), previously extracted by pressing in cold, clarified by centrifugation, and stored in refrigeration under nitrogen atmosphere. The antioxidant capacity is determine by DPPH method, the oxidative stability by the Rancimat test with temperature parameters 130, 140 and 150 °C, and airflow 15 L/h. The results are evaluate by ANOVA (p˂0, 05) finding in the antioxidant capacity and other analyzes made a significant difference with a level of 95% confidence in the variables of variety and degree of maturity. Regarding the influence, the relationship will be determined that in a mature degree of maturity has a higher content of unsaturated fatty acids (oleic), and a ...

El uso de tecnologías de IV Gama se promueve para prolongar la vida útil de vegetales frescos. El objetivo de este trabajo fue evaluar el efecto de un recubrimiento comestible (RC) formulado con una mezcla de gel de aloe vera (AV) y el aceite de Rosa Mosqueta (RM) para prolongar la vida útil de rabanito de IV gama. En la primera etapa, la materia prima se caracterizó fisicoquímicamente. Luego se diseñó un diagrama de flujo del proceso de la aplicación del RC, utilizando seis formulaciones: T1 (100.0 % y 2.0 %), T2 (100.0 % y 1.0 %), T3 (50.0 % y 0.0 %), T4 (50.0 % y 1.0 %), T5 (50.0 % y 2.0 %), T6 (100.0 % y 0.0 %) de AV y RM, respectivamente. Se evaluó la pérdida de peso, textura, color, vitamina C, sólidos solubles totales, acidez titulable y pH en rabanitos, utilizando el diseño estadístico completamente aleatorizado, con un arreglo factorial 2x3 con tres repeticiones. El...

El uso de tecnologías de IV Gama se promueve para prolongar la vida útil de vegetales frescos. El objetivo de este trabajo fue evaluar el efecto de un recubrimiento comestible (RC) formulado con una mezcla de gel de aloe vera (AV) y el aceite de Rosa Mosqueta (RM) para prolongar la vida útil de rabanito de IV gama. En la primera etapa, la materia prima se caracterizó fisicoquímicamente. Luego se diseñó un diagrama de flujo del proceso de la aplicación del RC, utilizando seis formulaciones: T1 (100.0 % y 2.0 %), T2 (100.0 % y 1.0 %), T3 (50.0 % y 0.0 %), T4 (50.0 % y 1.0 %), T5 (50.0 % y 2.0 %), T6 (100.0 % y 0.0 %) de AV y RM, respectivamente. Se evaluó la pérdida de peso, textura, color, vitamina C, sólidos solubles totales, acidez titulable y pH en rabanitos, utilizando el diseño estadístico completamente aleatorizado, con un arreglo factorial 2x3 con tres repeticiones. El...

The grains of tarwi (Lupinus mutabilis S.) have a high protein content, and are also very rich in some essential amino acids, such as lysine. However, the extrusion parameters significantly affect the protein contents of the generated products. The main objective of the study was to determine the best extrusion temperature in a snack made from tarwi and rice flours. For the production of the snack, tarwi flour (Lupinus mutabilis Sweet) was used, in three concentrations (8, 10 and 12%) and three proportions of rice flour (Orysa sativa) (88, 90 and 92%). The extrusion parameters were: extrusion temperature (100, 110, 115) ° C, screw rotation speed 1560 rpm, feed speed 1kg / min, blade speed 630 rpm, water flow 19.5 ml / min and diameter of the outlet nozzle 0.6 mm. A multilevel factorial design was used, achieving 9 experimental runs. The results of the sensory and proximal chemical analy...