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Physico-chemical characteristics and oxidative stability of oils from different Peruvian castor bean ecotypes = Características físico-químicas y estabilidad oxidativa de aceites de diferentes ecotipos de ricino peruano

Authors: L. Huamán; S. Huincho; E. Aguirre; G. Rodriguez; A. Brandolini; A. Hidalgo;

Physico-chemical characteristics and oxidative stability of oils from different Peruvian castor bean ecotypes = Características físico-químicas y estabilidad oxidativa de aceites de diferentes ecotipos de ricino peruano

Abstract

Características físico-químicas y estabilidad oxidativa de aceites de diferentes ecotipos de ricino peruano. El objetivo de esta investigación fue estudiar las propiedades fisicoquímicas y la vida útil de aceite de ricino extraido a presión a dos temperaturas (60 y 80 °C) de cinco ecotipos peruanos. Se notó u na amplia variación para todas las características. Se observaron bajos índice de acidez, bajo índice de peróxido y ausencia de p-anisidina. El contenido total de tocoferoles osciló entre 798 y 1040 mg/kg. Se detectó una mayor capacidad antioxidante en los extractos en metanol que en los extractos en hexano. A partir del Rancimat realizado a 150-170 °C, la vida útil prevista a 25 °C osciló entre 0.15 y 8.93 años; la mayor temperatura de extracción condujo a una vida útil más larga, probablemente debido a inactivación de las enzimas.

The aim of this research was to assess the physico-chemical properties and shelf-life of press-extracted oils at two temperatures (60 °C and 80 °C) from five Peruvian castor bean ecotypes. A wide variation for all traits was observed. Low acidity index, low peroxide index and absence of p-anisidine were recorded. The total tocopherol contents ranged from 798 to 1040 mg/kg. A higher antioxidant capacity was detected in methanolic extracts than in the hexane extract. From the Rancimat performed at 150-170 °C, the predicted shelf-life at 25 °C ranged from 0.15 to 8.93 years; the higher extraction temperature led to a longer shelf-life, probably because of enzyme inactivation.

Country
Italy
Keywords

antioxidant capacity; fatty acids; Rancimat; Ricinus communis; Tocols; ácidos grasos; capacidad antioxidante; Rancimat; Ricinus communis; Tocoles

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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