Action of phytosterols on thermally induced trans fatty acids in peanut oil

文献类型： 外文期刊

第一作者： Guo, Qin

作者： Guo, Qin;Li, Tian;Qu, Yang;Wang, Xinping;Liu, Li;Liu, Hongzhi;Wang, Qiang;Li, Tian;Qu, Yang;Wang, Xinping

作者机构：

关键词： Phytosterols; Heat treatment; Density functional theory; Trans fatty acids; Peanut oil

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2021 年 344 卷

页码：

收录情况： SCI

摘要： The effects of six phytosterols on thermally induced trans fatty acids (TFAs) in peanut oil were investigated. Peanut oil, triolein, trilinolein and trilinolenin heated at 180 degrees C for 12 and 24 h with or without phytosterols were analyzed by GC-FID. The atomic net charge distribution, frontier molecular orbital energy (FMOE), and bond dissociation energy (BDE) of six phytosterols were calculated by density functional theory. Results showed that six phytosterols inhibited the formation of trans oleic acid, trans linoleic acids, trans linolenic acids, and total TFAs. The anti-isomerization effects of phytosterols were mainly associated with hydroxyl site activities, which were affected by the double bond position in the main skeleton of cyclopentane tetrahydrophenanthrene and the number of double bonds on the C17 branch chain. The FMOE difference and BDE of phytosterol molecules were closely related to their anti-isomerization rates. The anti-isomerization mechanisms of phytosterols on TFAs in peanut oil were proposed.

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