Geographical Origin Discrimination of Oolong Tea (TieGuanYin, Camellia sinensis (L.) O. Kuntze) Using Proton Nuclear Magnetic Resonance Spectroscopy and Near-Infrared Spectroscopy

文献类型： 外文期刊

第一作者： Meng, Weijun

作者： Meng, Weijun;Xu, Xiangnan;Xu, Jingjing;Shen, Guiping;Dong, Jiyang;Cheng, Kian-Kai;Wu, Zhidan

作者机构：

关键词： Oolong tea;Geographical origin discrimination;NMR;NIR;Data fusion

期刊名称：FOOD ANALYTICAL METHODS （ 影响因子：3.366； 五年影响因子：3.07 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A total of 90 oolong tea samples were collected from three different growing places in the Fujian province of China. Both proton nuclear magnetic resonance (H-1 NMR) and near-infrared spectroscopy (NIR) were used to analyze the collected tea samples. With the aid of chemometric methods, differential components in H-1 NMR data and characteristic wavenumbers from NIR spectra were identified. Since NMR and NIR provide complementary information for tea samples, data fusion was carried out by combining H-1 NMR and NIR spectra of the collected tea sample. Experimental results showed that a better discrimination accuracy of geographical origins of oolong tea could be achieved by combining NMR and NIR data (86.2-95.8%), as compared to using NMR data (68.2-78.7%) or NIR data (80.0-89.3%) alone. The current data suggested that a combination of NMR and NIR methods could serve as an efficient way for geographical origin discrimination and qualitative control of oolong tea.

分类号： TS2

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