Characterization of chiral amino acids from different milk origins using ultra-performance liquid chromatography coupled to ion-mobility mass spectrometry

文献类型： 外文期刊

第一作者： Tian, He

作者： Tian, He;Zheng, Nan;Li, Songli;Zhang, Yangdong;Zhao, Shengguo;Wen, Fang;Wang, Jiaqi

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： Milk contains free amino acids (AAs) that play essential roles in maintaining the growth and health of infants, and D-AA isomers are increasingly being recognized as important signalling molecules. However, there are no studies of the different characteristics of chiral AA (C-AA) from different milk origins. Here, UPLC coupled to ion-mobility high-resolution MS (IM-HRMS) was employed to characterize 18 pairs of C-AAs in human, cow, yak, buffalo, goat, and camel milk. The results proved that milk origins can be differentiated based on the D-to L-AA ratio-based projection scores by principal component analysis. The present study gives a deeper understanding of the D-to L-AA ratio underlying the biological functions of different animal milks, and provide a new strategy for the study of AA metabolic pathways.

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