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
作者： Cui, Lili 1 ; Chen, Huan 1 ; Yuan, Yuwei 2 ; Zhu, Fengpeng 1 ; Nie, Jing 2 ; Han, Shulei 1 ; Fu, Ya'ning 1 ; Hou, Hongwei 1 ; Hu, Qingyuan 1 ; Chen, Zengping 5 ;
作者机构： 1.China Natl Tobacco Qual Supervis & Test Ctr, Key Lab Tobacco Biol Effects, Zhengzhou 450001, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, Hangzhou 310021, Peoples R China
3.Minist Agr & Rural Affairs China, Key Lab Informat Traceabil Agr Prod, Hangzhou 310021, Peoples R China
4.Beijing Life Sci Acad, Key Lab Tobacco Biol Effects & Biosynth, Beijing 100101, Peoples R China
5.Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China
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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