Consumption of thermally-oxidized sunflower oil by chicks reduces α-tocopherol status and increases susceptibility of tissues to lipid oxidation

作者: P. J. A. Sheehy , P. A. Morrissey , A. Flynn

DOI: 10.1079/BJN19940110

关键词:

摘要: The effect of heated sunflower oil consumption on alpha-tocopherol status, fatty acid composition and oxidative stability chicken tissues was investigated. Chicks were fed diets containing (g/kg): fresh (FSO) 40, (HSO) 40 or (40) supplemented with alpha-tocopheryl acetate (HSE) to a similar concentration as the FSO diet. Concentrations in chicks HSO HSE significantly lower than those FSO. Significant correlations observed between plasma concentrations other (r > = 0.67, P < 0.005) log thiobarbituric acid-reacting substances (TBARS) -0.851, 0.001). TBARS various generally very before stimulation peroxidation Fe-ascorbate. Susceptibility Fe-ascorbate-induced lipid increased by feeding HSO. Supplementation reduced susceptibility oxidation varying degrees, depending tissue. results suggest that chronic ingestion oxidized lipids may compromise free-radical-scavenging activity vivo depleting gastrointestinal tract, possibly tissues.

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