Effects of anaerobic treatment on the non-volatile components and angiotensin-converting enzyme (ACE) inhibitory activity of purple-colored leaf tea

文献类型： 外文期刊

第一作者： Yang, Gaozhong

作者： Yang, Gaozhong;Zhu, Yin;Shi, Jiang;Peng, Qunhua;Lin, Zhi;Lv, Haipeng;Yang, Gaozhong

作者机构：

关键词： Purple-colored leaf tea; Anaerobic treatment; Non-volatile metabolites; Angiotensin-converting enzyme; Molecule docking

期刊名称：FOOD CHEMISTRY-X （ 影响因子：6.5； 五年影响因子：6.4 ）

ISSN： 2590-1575

年卷期： 2024 年 23 卷

页码：

收录情况： SCI

摘要： This study investigated the effect of anaerobic treatment on the non-volatile components and angiotensinconverting enzyme (ACE) inhibitory activity in purple-colored leaf tea. Results showed that after 8 h of anaerobic treatment, the gamma-aminobutyric acid (GABA) content significantly increased from 0.02 mg/g to 1.72 mg/g (p < 0.05), while lactic acid content gradually rose from non-detectable levels to 3.56 mg/g. Notably, certain flavonols like quercetin and myricetin exhibited significant increments, whereas the total anthocyanins (1.01 mg/g) and epigallocatechin-3-(3"-O-methyl) gallate (13.47 mg/g) contents remained almost unchanged. Furthermore, the ACE inhibition rate of purple-colored leaf tea increased significantly from 42.16% to 49.20% (p <0.05) at a concentration of 2 mg/mL. Moreover, galloylated catechins showed stronger ACE inhibitory activity than non-galloylated catechins in both in vitro ACE inhibitory activity and molecular docking analysis. These findings might contribute to the development of special purple-colored leaf tea products with potential therapy for hypertension.

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