Tracing the geographical origin of rice by stable isotopic analyses combined with chemometrics. (30th May 2020)

• Record Type: Journal Article
• Authors: Wang, Jishi; Chen, Tianjin; Zhang, Weixing; Zhao, Yan; Yang, Shuming; Chen, Ailiang
• Is Part Of: Food chemistry. Volume 313(2020)
• Publication Date: 2020-05-30
• Subjects: Rice -- Provenance -- Stable isotope -- Chemometrics; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2019.126093
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: The characteristics of stable isotopes are selected for rice traceability. The index groups of characterized geographical features are established for rice. The combination of δ 13 C, δ 15 N and δ 18 O has high correct discrimination rate. Abstract: Multivariate stable isotope analysis combined with chemometrics was used to investigate and discriminate rice samples from six rice producing provinces in China (Heilongjiang, Jilin, Jiangsu, Zhejiang, Hunan and Guizhou) and four other Asian rice producing countries (Thailand, Malaysia, Philippines, and Pakistan). The stable isotope characteristics were analyzed for rice of different species cultivated with varied farming methods at different altitudes and latitudes/longitudes. The index groups of δ 13 C, δ 15 N, δ 18 O, 207/206 Pb and 208/207 Pb were screened and established for the selected samples with different geographical features by means of principal component analysis (PCA) and discriminant analysis (DA), which would provide a sound technical solution for rice traceability and serve as a template for further research on the traceability of other agricultural products, especially plant-derived products.