Chemometric origin classification of Chinese garlic using sulfur-containing compounds, assisted by stable isotopes and bioelements

文献类型： 外文期刊

第一作者： Nie, Jing

作者： Nie, Jing;Li, Chunlin;Wang, Fang;Rogers, Karyne M.;Zhang, Yongzhi;Yuan, Yuwei;Liu, Xiuhua;Qian, Yongzhong;Nie, Jing;Li, Chunlin;Zhang, Yongzhi;Yuan, Yuwei;Rogers, Karyne M.;Zhang, Yongzhi;Yuan, Yuwei;Qian, Yongzhong

作者机构：

关键词： Garlic; Geographical origin; Chemometrics; Stable isotopes; Bioelements; Sulfur-containing compounds

期刊名称：FOOD CHEMISTRY （ 影响因子：9.231； 五年影响因子：8.795 ）

ISSN： 0308-8146

年卷期： 2022 年 394 卷

页码：

收录情况： SCI

摘要： Geographical origin discrimination of agro-products is essential to guarantee food safety and fair trade. Garlic samples cultivated in six provinces or major production regions in China were characterized for stable isotopes (delta 13C, delta 2H, delta 18O, delta 15N, and delta 34S), bioelemental contents (% C, % N and % S), and sulfur-containing compounds (8 organosulfur components and 2 amino acids). Results showed that many of the 18 analyzed garlic variables had significant differences among production regions. Some sulfur-containing compounds found in garlic from different provinces had a strong correlation with sulfur isotopes, suggesting garlic sulfur isotopes were also affected by geographical origin. Two supervised pattern recognition models (PLS-DA and k-NN) were developed using stable isotopes, elemental contents, and sulfur-containing compounds, and had a discrimination accuracy of 93.4 % and 87.8 %, respectively. Chemometric classification models using multi-isotopes, elements and sulfurcontaining compounds provides a useful method to authenticate Chinese garlic origins.

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[1]Chemometric origin classification of Chinese garlic using sulfur-containing compounds, assisted by stable isotopes and bioelements. Nie, Jing,Li, Chunlin,Wang, Fang,Rogers, Karyne M.,Zhang, Yongzhi,Yuan, Yuwei,Liu, Xiuhua,Qian, Yongzhong,Nie, Jing,Li, Chunlin,Zhang, Yongzhi,Yuan, Yuwei,Rogers, Karyne M.,Zhang, Yongzhi,Yuan, Yuwei,Qian, Yongzhong. 2022

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