Application of multi-element (C, N, H, O) stable isotope ratio analysis for the traceability of milk samples from China

文献类型： 外文期刊

第一作者： Zhao, Shanshan

作者： Zhao, Shanshan;Zhao, Yan;Chen, Gang;Chen, Ailiang;Yang, Shuming;Zhao, Shanshan;Zhao, Yan;Chen, Gang;Chen, Ailiang;Yang, Shuming;Rogers, Karyne M.

作者机构：

关键词： Cow milk; Isotope ratio mass spectrometry (IRMS); Lactation; Sampling time; Geographic origin; Traceability

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： 2020 年 310 卷

页码：

收录情况： SCI

摘要： Cow milk samples from various provinces in China were collected, and the effects of lactation stage, sampling time, and geographic origin on the samples were studied by elemental analysis-isotope ratio mass spectrometry (EA-IRMS). Traceability accuracy was determined using delta C-13, delta N-15, delta H-2 and delta O-18 values to specifically assign geographic origin. Stable isotope ratios of C, N, H and O were not significantly different among three lactation stages; however the delta C-13, delta N-15, and delta O-18 values of milk were influenced by sampling time. Furthermore, there were highly significant regional differences in the mean delta C-13 and delta N-15 values of milk. In summary, the lactation stage had no effect on the traceability of milk, whereas sampling time and geographic origin did affect milk traceability. Different geographic locations with a separation distance greater than 0.7 km can be distinguished using multi-element (C, N, H, O) stable isotope ratio analysis.

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