数字农科院2.0

Multielement authentication of apples from the cold highlands in southwest China

文献类型： 外文期刊

作者： Zhang, Jianyi;Nie, Jiyun;Zhang, Liangbin;Xu, Guofeng;Zheng, Haidong;Shen, Youming;Kuang, Lixue;Gao, Xiaoqin;Zhang, Hui

作者机构：

关键词： Malus domestica; mineral elements; geographical verification; linear and nonlinear discriminant analysis; random forest analysis

期刊名称： JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE

ISSN： 0022-5142

年卷期： 2022 年 102 卷 1 期

页码：

收录情况： SCIE（2022版）

摘要： BACKGROUND Half of all apple production worldwide comes from China. However, the geographic authentication of Chinese apples has not been well studied. We highlight the multi-element-based geographical discrimination of apples from the southwest cold highlands (SCH) of China. 565 samples from the SCH (138) and others (427) were obtained, and the content of fifteen elements were applied to construct models for discrimination. RESULTS The SCH apples from 2017 to 2019 had higher concentrations of Mn, Zn, Cr, Cd, Se, Pb, and Fe, but lower concentrations of Na, B, Ni, and P. With sufficient training, linear discriminant analysis (LDA) discriminated the SCH, and the testing accuracy averaged 92.5% and 92.2%. Nonlinear discrimination models were more suitable than the linear models. Optimized random forest analysis was the model with the best fit, and with averaged training and testing it obtained a level of accuracy of 98.2% and 98.5%. CONCLUSION The multielement-based discrimination of SCH apples could aid further studies of geographical origins. (c) 2021 Society of Chemical Industry.

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