| Title: | Targeted and untargeted metabolomic analyses and biological activity of Tibetan tea |
| Author(s): | Liu Y; Huang W; Zhang C; Li C; Fang Z; Zeng Z; Hu B; Chen H; Wu W; Wang T; Lan X; |
| Address: | "College of Food Science, Sichuan Agricultural University, Yaan 625014, China. Electronic address: nutritionlab@sicau.edu.cn. College of Food Science, Sichuan Agricultural University, Yaan 625014, China. College of Food Science, Sichuan Agricultural University, Yaan 625014, China. Electronic address: zengzhen201304@163.com. College of Science, Sichuan Agricultural University, Yaan 625014, China. Lushan County Farmer Professional Cooperative of Sweet Tea, Yaan 625600, China. Sichuan Yingtai Tea Industry Co., Ltd., Yaan 625200, China" |
| DOI: | 10.1016/j.foodchem.2022.132517 |
| ISSN/ISBN: | 1873-7072 (Electronic) 0308-8146 (Linking) |
| Abstract: | "Tibetan tea is not only a national product of geographical identity, but also a traditional beverage inherits Chinese tradition. This study evaluated the metabolic profiles and biological activity in four Tibetan teas. 83 non-volatile metabolites were identified as differentially expressed metabolites, including amino acids and their derivatives, phenolic acids, flavonoids, nucleotides and their derivatives, terpenes, alkaloids, organic acids, lipids and others. CC and 131 were rich in terpenoids and lipids. MZ contained the highest contents of amino acids and their derivatives, phenolic acids and flavonoids. 26 key volatile compounds were considered as odor-active compounds. MZ showed the highest level of antioxidant and hypoglycemic activity. Statistics analysis indicated that polyphenols, flavonoids and catechins were significantly correlated (|r| >/= 0.7, P < 0.05) with biological activities. This study indicated significant differences in the metabolic profiles of various types of Tibetan tea, which provided a clear database for quality detection of Tibetan tea" |
| Keywords: | Amino Acids *Camellia sinensis/chemistry Flavonoids/analysis Lipids Phenols/analysis Tea/chemistry Terpenes/analysis Tibet Antioxidant activity Chemical composition Hypoglycemic activity Targeted metabolomic Tibetan tea Untargeted metabolomic; |
| Notes: | "MedlineLiu, Yuntao Huang, Weimin Zhang, Changyi Li, Cheng Fang, Zhengfeng Zeng, Zhen Hu, Bin Chen, Hong Wu, Wenjuan Wang, Tiqiang Lan, Xiguo eng England 2022/03/02 Food Chem. 2022 Aug 1; 384:132517. doi: 10.1016/j.foodchem.2022.132517. Epub 2022 Feb 21" |
