Enantiomeric distributions of volatile lactones and terpenoids in white teas stored for different durations

文献类型： 外文期刊

第一作者： Zhu, Yin

作者： Zhu, Yin;Kang, Suyoung;Yan, Han;Lv, Hai-Peng;Zhang, Yue;Lin, Zhi;Yan, Han

作者机构：

关键词： Enantiomeric distribution; GC-MS; Lactone; Storage duration; Terpenoid; White tea

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2020 年 320 卷

页码：

收录情况： SCI

摘要： Precise identification of the compounds characteristic to stored white teas is urgently needed as these products have unique flavors and health benefits that improve with storage duration. Owing to the potential applications in food quality discrimination, specific regularities between the enantiomeric distributions of 23 volatile lactones and terpenoids and storage durations of white teas were expected and investigated by enantioselective gas chromatography-mass spectrometry (Es-GC-MS) combined with multivariate statistical analysis. High correlation coefficients (-0.853 to 0.695) and significant differences (P < 0.001) between the enantiomeric ratios (ERs) of (2S, 5S)-linalool oxide A, (2S, 5R)-linalool oxide B, (2R, 5S)-theaspirane B, S-linalool, and (1R, 2S)-methyl epijasmonate and the storage durations (0-7 years) were obtained, and the contents of S-linalool and S/R-dihydroactinidiolide significantly decreased and increased, respectively, with the increasing of storage duration. Therefore, the aforementioned lactone and terpenoid enantiomers are potential markers for the reliable differentiation of white teas stored for different time periods.

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