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Isotope chemometrics determines farming methods and geographical origin of vegetables from Yangtze River Delta Region, China

文献类型： 外文期刊

作者： Liu, Xing 1 ; Liu, Zhi 2 ; Qian, Qunli 1 ; Song, Wei 1 ; Rogers, Karyne M. 2 ; Rao, Qinxiong 1 ; Wang, Sheng 1 ; Zhang, Q 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, Shanghai 201403, Peoples R China

2.State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China

3.Shanghai Serv Platform Agroprod Qual & Safety Eva, Shanghai 201403, Peoples R China

4.Zhejiang Acad Agr Sci, Inst Qual & Stand Agr Prod, Hangzhou 310021, Peoples R China

5.GNS Sci, Natl Isotope Ctr, 30 Gracefield Rd, Lower Hutt 5040, New Zealand

6.Shanghai Acad Agr Sci, Informat Res Inst Sci & Technol, Shanghai 201403, Peoples R China

关键词： Yangtze River Delta Region; Vegetables; Geographical origin; Farming methods; Stable isotopes; PLS-DA; SVM

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2021 年 342 卷

页码：

收录情况： SCI

摘要： Shanghai city has encountered possible food fraud regarding the geographical mislabeling of vegetables for economic gain. A combination of delta C-13, delta N-15, delta H-2 and delta O-18 values and partial least squares discrimination analysis and support vector machine (SVM) methods were used for the first time to assess farming methods and determine the origin of vegetables from Shanghai city, Anhui and Zhejiang provinces. The results showed that 65.8% of Shanghai vegetables, 38.2% of Anhui vegetables and 23.6% of Zhejiang vegetables appeared to be grown using green or organic farming methods. The optimal discriminant model was obtained using SVM with a predictive accuracy of 100% for Shanghai vegetables. Zhejiang vegetables had a predictive accuracy of 91.7%, while it was difficult to distinguish Anhui vegetables from Shanghai or Zhejiang vegetables. Therefore, this study provided a useful method to identify vegetable farming methods and discriminate vegetables from Shanghai and Zhejiang.

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