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脂质氧化。第1部分。游离羧基对脂质氢过氧化物分解的影响。

Lipid oxidation. Part. 1. Effect of free carboxyl group on the decomposition of lipid hydroperoxide.

作者信息

Pokorný J, Rzepa J, Janícek G

出版信息

Nahrung. 1976;20(1):1-6. doi: 10.1002/food.19760200102.

DOI:10.1002/food.19760200102
PMID:958305
Abstract

Hydroperoxido butyl oleate was decomposed by heating in excess palmitic acid at 60-120 degrees C. The decomposition followed the kinetics of a first order reaction with formation of both monomeric and oligomeric secondary products. The proportions of oligomers slightly increased with increasing reaction temperature and decreased with increasing concentration of hydroperoxide. The activation energy was 70.4 kJ/mol +/- 4.7 kJ/mol. The decomposition of hydroperoxides proceeded partially by monomolecular cleavage, partially by formation of esters with palmitic acid.

摘要

在60 - 120℃下,通过在过量的棕榈酸中加热,油酸丁酯氢过氧化物发生分解。该分解遵循一级反应动力学,生成单体和低聚二级产物。低聚物的比例随反应温度升高略有增加,随氢过氧化物浓度增加而降低。活化能为70.4 kJ/mol ± 4.7 kJ/mol。氢过氧化物的分解部分通过单分子裂解进行,部分通过与棕榈酸形成酯进行。

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