Stable isotopes verify geographical origin of Tibetan chicken

文献类型： 外文期刊

第一作者： Zhaxi, Cidan

作者： Zhaxi, Cidan;Zhang, Tangwei;Zhao, Shanshan;Zhao, Yan;Dong, Hao;Liu, Haijin

作者机构：

关键词： Tibetan chicken; Traceability; Stable isotope; Chemometrics; Environmental parameters

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 358 卷

页码：

收录情况： SCI

摘要： Due to the particularity of origin area, the yield and price of Tibetan chicken are different from those in the plain areas, which leads to chickens from the plains being disguised as Tibetan chickens. In present study, Tibetan chicken and chicken from other four provinces in plain areas were distinguished by stable isotopes and chemometric methods. The cross-validation rate was 97.6%. Secondly, correlation between mean 613C, 615N, 62H and 618O values in chicken samples and environmental parameters was investigated. These indicators are closely related to geographical environment. 613C and 615N values were positively correlated with longitude (R = 0.955) and altitude (R = 0.796), respectively. 618O and 62H values were negatively correlated with latitude (R = 0.903) and altitude (R = 0.938), respectively. At last, we used stable isotopes to trace Tibetan chicken from the different area of Tibet. When four stable isotope ratios were combined, we can distinguish them.

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