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...

Organic agriculture is highly valued internationally as it results in significant economic gains for the value chains of various food products. Within the organic certification process, the identification of agrochemical residues in food is vital for screening production lots that come from organic and/or conventional crops. Currently, the analysis of agrochemical residues is performed with highly sophisticated techniques such as liquid chromatography (LC) and gas chromatography (GC) coupled to mass detectors (MS), these techniques are highly expensive and complex. The present review provides insights into how the combination of vibrational spectroscopy with appropriate chemometric techniques (multivariate statistics) can be used to develop methods for classification and quantification of agrochemical residues in various food matrices in a simple way, avoiding the use of toxic reagents, ...

Peru has several foods with high lipid content (especially oils), rich in omega fatty acids (ω-3 and ω-6) that are widely studied for their anti-inflammatory (ω-3) and pro-inflammatory (ω-6) effects. However, ω-3 and ω-6 are susceptible to oxidation resulting in accelerated deterioration of the oils. The objective of this work was to determine the oxidative stability index (OSI) of vegetable (seeds) and animal (anchoveta) oils from Peru, with high ω-3 and ω-6 contents, in order to compare oxidation kinetic parameters and shelf life. For this purpose, the Rancimat accelerated oxidation method was used, whose working parameters were: air flow (F = 25 L/h), sample weight (M = 3 g) and temperature range (T = 60-140 °C). The results indicated that the OSI values, as well as the shelf-life projection (T = 25°C) were in the following order: olive oil > chestnut > sesame > sac...

El objetivo de esta investigación fue determinar el índice de estabilidad oxidativa (OSI) en aceite virgen de semillas de Sesamum Indicum L. (Sésamo), previamente extraído por presión en frío, clarificado por centrifugación y almacenado bajo atmósfera de nitrógeno, y en refrigeración. El OSI se determinó mediante la prueba acelerada de Rancimat, para ello se utilizaron 3.0 ± 0.1 g de muestra, parámetros de temperatura (110, 130 y 150°C) y flujo de aire (15, 20 y 25 L/h). Al aplicar el test de Rancimat, se pudo comprobar mediante el ANOVA (p<0.05) que la influencia de la temperatura en el OSI fue altamente significativa, mientras que el flujo de aire solo fue significativo. Mediante el método de extrapolación, se calcularon los valores de OSI a temperaturas usuales de almacenamiento de aceites (25°C) obteniéndose tiempos de estabilidad de 214, 242 y 222 días; además la...

Quinoa is a very important grain for human nutrition; In recent years, several research studies have addressed its nutritional use; However, one of its main weaknesses is its saponin content, which is an anti-nutrient and has a bitter taste. The debittering process involves the principle of recirculation of large quantities of water, with the purpose of reducing the consumption of this substance, it is important to develop methodologies and equipment that improve the efficiency of these traditional washing methods and reduce the work of operators and processors with the intention of making it less costly. The objective of the present research work was to design and build a quinoa de- saponifier , Amarillo Maranganí variety, to evaluate the effect of washing time (5, 10 and 15 min) and the flow of water recirculated by pumping (15, 30 and 45 L/min), on the elimination of saponin to accep...

Cocoa butter is widely used in the food field, especially in the production of chocolates, so it is obtained mainly by pressing and solvent methods. The present research work was aimed at comparing both extraction methods in order to determine the qualitative and quantitative effect on the fatty acid profile. The qualitative results obtained by mid-infrared spectroscopy (MIR) indicated similar presence of functional group vibrations throughout the wavelength range studied. At the quantitative level, gas chromatography indicated that the major fatty acids (palmitic, stearic and oleic) did not present significant differences (p<0.05). The use of hydraulic pressing is a much more environmentally friendly method, although its great disadvantage was found in the extraction yield.