Characterization of stored regular and low-linolenic canola oils at different levels of consumer acceptance.

Autor: Malcolmson, L., Vaisev-Genser, M., Przybylski, R., Ryland, D., Eskin, N., Armstrong, L.
Zdroj: Journal of the American Oil Chemists' Society (JAOCS); Sep1996, Vol. 73 Issue 9, p1153-1160, 8p
Abstrakt: A ten-member trained sensory panel evaluated regular (RCO) and low-linolenic (LLCO) canola oils that had been stored at 60°C to four levels of consumer acceptance identified in a prior study. These levels were 70, 60, 50, and 40% acceptance for RCO and 80, 70, 60, and 50% acceptance LLCO. Painty odor intensity increased as consumer acceptance decreased. This same trend was found for chemical measurements of peroxide values, total volatiles, total carbonyls, unsaturated carbonyls, and dienals. These chemical indices were significantly correlated with each other, suggesting that they can be used to monitor related changes in oil quality with respect to lipid oxidation. Values for 19 individual volatiles at each consumer acceptance level were also reported. The data collected in this study provide chemical and sensory characterization of stored RCO and LLCO at distinct levels of consumer acceptance. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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