Characterizations of stable carbon and nitrogen isotopic ratios in wheat fractions and their feasibility for geographical traceability: A preliminary study

文献类型： 外文期刊

第一作者： Liu, Hongyan

作者： Liu, Hongyan;Guo, Boli;Zhang, Bo;Zhang, Yingquan;Wei, Shuai;Li, Ming;Wadood, Syed Abdul;Wei, Yimin

作者机构：

关键词： Food analysis; Food composition; Triticum aestivum L.; Geographical origin; Isotope ratio mass spectrometry; delta C-13; delta N-15; Milling fraction

期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.556； 五年影响因子：4.89 ）

ISSN： 0889-1575

年卷期： 2018 年 69 卷

页码：

收录情况： SCI

摘要： The study aims to investigate the characterization of stable isotopic ratios in wheat milling fractions (bran, wheat shorts, and flour) and extracts (defatted flour, gluten, lipid, starch, and crude fiber) and correlations among different matrices for each isotope, which could provide some references for the development and application of stable isotopes for geographical traceability of wheat and its milling products. Wheat samples with three genotypes were collected from three regions in China. delta C-13 and delta N-15 values in wholemeal, milling fractions and extracts were determined. Results showed that delta C-13 varied significantly among milling fractions and extracts, while no significant difference was found among delta N-15 values of different milling fractions or extracts. Each isotope shows significantly positive correlations among wheat fractions (p < 0.01). The variations of delta C-13 and delta N-15 were most contributed by fraction and region, respectively. Therefore, delta N-15 is suitable for geographical traceability of wheat and its milling products.

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