Tracing the geographical origin of tobacco at two spatial scales by stable isotope and element analyses with chemometrics

文献类型： 外文期刊

第一作者： Cui, Lili

作者： Cui, Lili;Chen, Huan;Zhu, Fengpeng;Han, Shulei;Fu, Ya'ning;Hou, Hongwei;Hu, Qingyuan;Yuan, Yuwei;Nie, Jing;Yuan, Yuwei;Nie, Jing;Cui, Lili;Chen, Huan;Han, Shulei;Fu, Ya'ning;Hou, Hongwei;Hu, Qingyuan;Cui, Lili;Chen, Zengping

作者机构：

关键词： Geographical origin; Stable isotopes; Elements; OPLS-DA modeling; Tobacco

期刊名称：FOOD CHEMISTRY-X （ 影响因子：6.1； 五年影响因子：6.4 ）

ISSN： 2590-1575

年卷期： 2023 年 18 卷

页码：

收录情况： SCI

摘要： Tobacco is a widely cultivated cash crop, but it is often smuggled and sold illegally. Unfortunately, there is currently no way to verify the origin of tobacco in China. In an effort to address this issue, we conducted a study using stable isotopes and elements from 176 tobacco samples at both provincial and municipal scales. Our findings revealed significant differences in 613C, K, Cs, and 208/206Pb at the provincial-level, and Sr, Se, and Pb at the municipal level. We created a heat map at the municipal level, which showed a similar cluster classification to geographic grouping and provided an initial assessment of tobacco origins. Using OPLS-DA modeling, we achieved a 98.3% accuracy rate for the provincial scale and 97.6% for the municipal scale. It is worth noting that the importance of rankings of variables varied depending on the spatial scale of the evaluation. This study offers the first traceability fingerprint dataset of tobacco and has the potential to combat mislabeling and fraudulent conduct by identifying the geographical origin of tobacco.

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