Combination of the Sr-87/Sr-86 ratio and light stable isotopic values (delta C-13, delta N-15 and delta D) for identifying the geographical origin of winter wheat in China
文献类型: 外文期刊
第一作者: Liu, Hongyan
作者: Liu, Hongyan;Wei, Yimin;Wei, Shuai;Jiang, Tao;Zhang, Yingquan;Guo, Boli;Lu, Hai
作者机构:
关键词: Geographical origin;delta C-13;delta N-15;delta D;Sr-87/Sr-86
期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )
ISSN:
年卷期:
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收录情况: SCI
摘要: This study aims to investigate whether isotopic signatures can be used to develop reliable fingerprints for discriminating the geographical origin of Chinese winter wheat, and to evaluate the discrimination effects of delta C-13, delta N-15 and delta D, alone or with Sr-87/Sr-86. In this study, the values of delta C-13, delta N-15 and delta D, and the Sr-87/Sr-86 ratios of wheat and provenance soils from three regions were determined. Significant differences were found in all parameters of wheat and Sr-87/Sr-86 in soil extract (reflecting the bioavailable fraction of soil) among different regions. A significantly positive correlation was observed between the Sr-87/Sr-86 ratios of wheat and soil extracts. An overall correct classification rate of 77.8% was obtained for discriminating wheat from three regions based on light stable isotopes (delta C-13, delta N-15 and delta D). The correct classification rate of 98.1% could be obtained with the combination of the Sr-87/Sr-86 ratio and the light stable isotopic values. (C) 2016 Elsevier Ltd. All rights reserved.
分类号: TS2`TS201.2
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