Determination of geographical origin of concentrated apple juice through analysis of stable isotopic and mineral elemental fingerprints: preliminary results

文献类型： 外文期刊

第一作者： Liu, Xiaohan

作者： Liu, Xiaohan;Mu, Jian;Zhang, Jinjie;Zhang, Ang;Liu, Xiaohan;Zhao, Yan

作者机构：

关键词： food authenticity; geographic origin; stable isotopic; mineral element; concentrated apple juice

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）

ISSN： 0022-5142

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收录情况： SCI

摘要： BACKGROUND With increasing attention being paid to food authenticity, the geographic origin of food has become a topic of interest for both consumers and producers. As far as we know, there are relatively few studies on the origin traceability of concentrated apple juice. The most commonly used methods of origin tracing research is by using stable isotopes and mineral elements technology, because these indicators are directly related to local geographical environment. RESULTS In this study, a discriminant model was established by determining the content of the stable isotopes (delta C-13, delta O-18) and 13 mineral elements (B, Mn, Co, Ni, Cu, Sr, V, Ba, Fe, Mg, Na, Ca and Cr) in concentrated apple juice. Linear discriminant analysis (LDA), principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) were employed for regional classification of samples. After data conversion and correlation analysis, spatial and quantitative prediction models were established using multiple linear regressions. Finally, the experimental results showed that the eight key variables(delta (13) C, delta (18) O, B, Ca, Mg, Cu, Sr and Na) selected by the analysis can be used to further characterize the production area. CONCLUSION The results showed that the carbon and oxygen isotopes combined with certain mineral elements can be used to indicate the origin of concentrated apple juice. (c) 2020 Society of Chemical Industry

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