Stable isotope and multi-element profiling of Cassiae Semen tea combined with chemometrics for geographical discrimination
文献类型： 外文期刊
作者： Wang, Youyou 1 ; Kang, Liping 1 ; Zhao, Yuyang 1 ; Xiong, Feng 1 ; Yuan, Yuwei 2 ; Nie, Jing 2 ; Huang, Luqi 1 ; Yang, Jian 1 ;
作者机构： 1.China Acad Chinese Med Sci, Natl Resource Ctr Chinese Mat Med, State Key Lab Breeding Base Daodi Herbs, Beijing 100700, Peoples R China
2.Minist Agr & Rural Affairs China, Key Lab Informat Traceabil Agr Prod, Hangzhou 310021, Zhejiang, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, Hangzhou 310021, Peoples R China
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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