Discriminating geographical origins and determining active substances of water caltrop shells through near-infrared spectroscopy and chemometrics

文献类型： 外文期刊

第一作者： Li, Rui

作者： Li, Rui;Liu, Yan;Xia, Zhenzhen;Wang, Qiao;Liu, Xin;Gong, Zhiyong;Liu, Yan;Liu, Yan;Liu, Yan;Xia, Zhenzhen

作者机构：

关键词： Near-infrared spectroscopy; Chemometrics; Water caltrop shell; Geographical discrimination; Phenolic compound; Flavonoid

期刊名称：SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY （ 影响因子：4.4； 五年影响因子：3.9 ）

ISSN： 1386-1425

年卷期： 2023 年 303 卷

页码：

收录情况： SCI

摘要： Near-infrared spectroscopy (NIRS) combined with chemometric methods were used to discriminate the geographical origins of the water caltrop shells from different regions of China. Two active substances, the total phenolic content (TPC) and total flavonoid content (TFC) in the water caltrop shells were determined through the technique as well. Principal component analysis (PCA) combined with linear discriminant analysis (LDA) was adopted to build the geographical discriminant model. Quantitative analysis models of TPC and TFC were built using partial least squares (PLS) regression. 1st derivative and randomization test (RT) methods were used to optimize the quantitative analysis models. It was found that the geographical discriminant model can correctly recognize the water caltrop shells from different regions of China with a total accuracy of 93.33%. The values of TPC and TFC obtained by the optimized models and the standard method are close. The coefficient of determination (R-2) and the ratio of prediction to deviation for the two substances were 0.91, 0.89 and 3.02, 3.02, respectively. The results demonstrated the feasibility of NIRS combined with chemometric methods for the geographical discrimination of water caltrop shells and the quantitative analysis of TPC and TFC in water caltrop shells.

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