Multi-stable isotope and multi-element origin traceability of rice from the main producing regions in Asia: A long-term investigation during 2017-2020

文献类型： 外文期刊

第一作者： Zhi, Liu

作者： Zhi, Liu;Yuan, Wei;Hao, Yudi;Wei, Liu;Meng, Guiyuan;Zhi, Liu;Wei, Liu;Bin, Li

作者机构：

关键词： Rice; Stable isotope; Multi -element; Origin traceability; Chemometrics; Food authenticity

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2023 年 412 卷

页码：

收录情况： SCI

摘要： Stable isotope and multi-element analytical techniques with chemometrics were developed to trace the origin authenticity of rice in China market. In the long-term study from 2017 to 2020, a total of 115 batches of rice samples from 8 main producing areas of 7 Asian countries were determined 5 stable isotope ratios and 18 elemental contents. One-way analysis of variance (ANOVA) and various multivariate modeling methods were performed for the origin discrimination. Supervised multivariate modeling including partial least squares discriminant analysis (PLS-DA) and linear discriminant analysis (LDA) can realize more satisfactory identifica-tion of 8 rice origins than ANOVA comparison and unsupervised methods, their leave-one-out cross-validation accuracies approach 85.0 % and 90.9 %, respectively. delta 2H, delta 13C, Ba, Al, Mg, delta 34S, Pb and delta 18O were screened as the most important variables for rice origin traceability (VIP > 1 or AUC > 0.5). This analytical strategy combining maybe promising to ensure the origin authenticity and combat illegal mislabeling in rice trade.

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