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首页> 外文期刊>Journal of Agricultural and Food Chemistry >ANTIOXIDANT ACTIVITY OF CARNOSIC ACID AND METHYL CARNOSATE IN BULK OILS AND OIL-IN-WATER EMULSIONS
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ANTIOXIDANT ACTIVITY OF CARNOSIC ACID AND METHYL CARNOSATE IN BULK OILS AND OIL-IN-WATER EMULSIONS

机译：散装油和污水中乳油中香囊酸和甲基香茅酸的抗氧化活性。

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This study was aimed at evaluating the antioxidant activities of carnosic acid and its methyl ester, methyl carnosate, in inhibiting the formation and decomposition of hydroperoxides in bulk and emulsified corn oil triglycerides at 60 degrees C. In both lipid systems, methyl carnosate was a better antioxidant than carnosic acid, and both were more active than alpha-tocopherol. The difference in antioxidant activity between methyl carnosate and carnosic acid was greater in emulsion than in bulk systems. Carnosic acid was less stable than methyl carnosate and alpha-tocopherol in bulk corn oil and 1% Tween 20 micelle solution. The partitioning of carnosic acid into the water phase may explain its low activity in emulsions. The measurement of antioxidant depletion may not be a valid method to evaluate antioxidant activities because the antioxidant activities of carnosic acid and methyl carnosate were not related to their oxidative stability in bulk oil and Tween 20 solution.
机译：这项研究旨在评估肌酸及其甲基酯，肌酸甲酯在60摄氏度下抑制散装和乳化玉米油甘油三酸酯中氢过氧化物的形成和分解的抗氧化活性。在两种脂质体系中，肌酸甲酯均是更好的抗氧化剂。抗性比肌酸强，并且都比α-生育酚更活泼。乳液中的肌酸甲酯和肌酸之间的抗氧化活性差异大于本体体系中的差异。在散装玉米油和1％Tween 20胶束溶液中，肌酸比肌酸甲酯和α-生育酚的稳定性差。肌酸在水相中的分配可能解释了其在乳液中的低活性。抗氧化剂消耗的测量可能不是评估抗氧化剂活性的有效方法，因为肌酸和肌酸甲酯的抗氧化剂活性与其在散装油和Tween 20溶液中的氧化稳定性无关。

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