Stable isotope and multi-element profiling of Cassiae Semen tea combined with chemometrics for geographical discrimination

文献类型： 外文期刊

第一作者： Wang, Youyou

作者： Wang, Youyou;Kang, Liping;Zhao, Yuyang;Xiong, Feng;Huang, Luqi;Yang, Jian;Yuan, Yuwei;Nie, Jing;Yuan, Yuwei;Nie, Jing

作者机构：

关键词： Cassiae Semen; Geographical traceability; Stable isotopes; Multi-element; Chemometrics; Discriminant analysis

期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.52； 五年影响因子：4.942 ）

ISSN： 0889-1575

年卷期： 2022 年 107 卷

页码：

收录情况： SCI

摘要： Cassiae Semen (Sicklepod seeds), a popular Chinese traditional medicinal tea that is roasted, crushed, and infused in boiled water to make a commonly used traditional tea drink. The quality and efficacity of Cassiae Semen are closely related to its geographical origin. Therefore, stable isotope (delta C-13, delta N-15, delta H-2, and delta O-18) and multi-element (32 elements) chemometrics were used to develop a geographical discrimination method for Cassiae Semen. In this study, significant isotopic and elemental differences (p < 0.05) were found for Cassiae Semen teas from different growing regions in China and Vietnam. Regional samples were separated using unsupervised PCA, and OPLS-DA identified specific elemental and isotopic variables (K, Ca, Mg, Al, Fe, Ba, and delta H-2) as key origin discrimination markers. OPLS-DA had a high discrimination accuracy rate (100 % and 99.6 %) for high-quality Cassiae Semen tea cultivated in Xinchang County, Zhejiang Province (ZJXC), China, and Hanoi Province, Vietnam (VIEHN), respectively. Multi-element and stable isotope analyses combined with chemometrics provide a promising method to confirm the geographical origin of Cassiae Semen.

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