Profiling of Branched Fatty Acid Esters of Hydroxy Fatty Acids in Teas and Their Potential Sources in Fermented Tea

Autor:	Quan-Fei Zhu, Ya-Hui Ge, Na An, Na Li, Ying Xiao, Guo-Xin Huang, Li-Li Zhang, Yu-Qi Feng, Jian-Lin Wu
Rok vydání:	2022
Předmět:	Tea Fatty Acids Esters General Chemistry General Agricultural and Biological Sciences Mass Spectrometry Chromatography Liquid
Zdroj:	Journal of Agricultural and Food Chemistry. 70:5369-5376
ISSN:	1520-5118 0021-8561
DOI:	10.1021/acs.jafc.2c01210
Popis:	Branched fatty acid ester of hydroxy fatty acid (FAHFA) is a class of natural lipid with important biological functions. In this study, we first profiled natural-origin FAHFAs in different teas using the chemical labeling-assisted liquid chromatography-mass spectrometry method. Consequently, we observed rich molecular diversity of FAHFAs with multiple regioisomers in teas. Additionally, the FAHFA contents had a positive relationship with the tea fermentation degree and a negative relationship with homologous fatty acids. Moreover, the highly accumulated FAHFAs (e.g., 3-MAHMA) in some postfermented teas (e.g., Fu brick tea) were also basically interpreted with regiospecificity of FAHFAs in both teas and fungus. This study revealed that tea is a rich natural source of FAHFAs, and some abundant FAHFAs might be the functional molecules accounting for the antidiabetic function of teas.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a37ac9866b46018c6a8e1968922b7d4e https://doi.org/10.1021/acs.jafc.2c01210 Zobrazit plný text záznamu