数字农科院2.0

Effect of cultivar and process on the astringency of matcha based on flavonoids-targeted metabolomic analysis

文献类型： 外文期刊

作者： Jinjin Xue;Panpan Liu;Yongquan Xu;Anhui Gui;Xueping Wang;Fei Ye;Lin Feng;Shengpeng Wang;Jing Teng;Shiwei Gao;Pengcheng Zheng

作者机构：

关键词： Astringency;Cultivar;Drying;Flavonoids-targeted metabolomic;Glycosylation modification

期刊名称： Food Research International

ISSN： 0963-9969

年卷期： 2025 年 204 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Astringency is crucial in determining the taste quality of matcha, primarily influenced by flavonoids. However, the specific impact of cultivars and processing techniques on flavonoid composition remains unclear. This study employs quantitative descriptive analysis, multivariate statistical analysis, dose over threshold (Dot) values, and sensory verification to comprehensively analyze changes in flavonoid profiles during the processing of two cultivars (Longjing 43 and Zhongcha 108) and their effects on matcha's astringency. 679 flavonoid metabolites were identified, predominantly comprising flavones and flavonols. Longjing 43 fresh leaves predominantly contain glycosylated flavonoids, whereas Zhongcha 108 has a higher proportion of O-methylated modifications. Drying is a critical process, significantly boosting flavonoid glycoside content. Cultivar emerges as the primary and most influential factor determining matcha astringency, with processing techniques exerting a lesser impact. Furthermore, by utilizing Dot values and sensory verification, it was determined that quercetin-3-O-glucoside, kaempferol-3-O-rutinoside, (−)-epigallocatechin gallate, and kaempferol-3-O-glucoside are pivotal components of matcha's astringency.

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