Exploration of the effects of geographical regions on the volatile and non-volatile metabolites of black tea utilizing multiple intelligent sensory technologies and untargeted metabolomics analysis

文献类型： 外文期刊

第一作者： Wang, Lilei

作者： Wang, Lilei;Xie, Jialing;Wang, Qiwei;Hu, Jiajing;Jiang, Yongwen;Wang, Jinjin;Yuan, Haibo;Yang, Yanqin;Wang, Lilei;Miao, Yiwen;Tong, Huarong

作者机构：

关键词： Congou black tea; Geographical region; Intelligent sensory technology; Untargeted metabolomics; Multivariate statistical analysis

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： Geographical regions profoundly influence the flavor characteristics of Congou black tea (CBT). In this study, 35 CBT samples from 7 geographical regions were comprehensively characterized by integrated multiple intelligent sensory technologies and untargeted metabolomics analysis. A satisfactory discrimination was achieved through the fusion of multiple intelligent sensory technologies ((RY)-Y-2 = 0.918, Q(2 )= 0.859). A total of 104 non-volatile and 169 volatile metabolites were identified by UHPLC-HRMS and GC-MS, respectively. Of these, 45 critical differential non-volatile metabolites and 76 pivotal differential volatile metabolites were pinpointed based on variable importance in projection >1 and p < 0.05. Moreover, 52 key odorants with OAV >= 1 were identified, with hexanal, phenylacetaldehyde, linalool, beta-cyclocitral, methyl salicylate, geraniol, alpha-ethylidene phenylacetaldehyde, and trans-beta-ionone being recognized as the common odorants across 7 geographical regions. The results provide theoretical support for a comprehensive understanding of the effect of geographical regions on the flavor of black tea.

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