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Metabolic discrimination of Swertia mussotii and Swertia chirayita known as “Zangyinchen” in traditional Tibetan medicine by 1H NMR-based metabolomics
PBA Journal of Pharmaceutical and Biomedical Analysis
Format: Journal Article
Publication Year: 2014
Pages: 364 - 370
Source ID: shanti-sources-101956
Abstract:
• A 1H NMR-based method is first developed to differentiate two Swertia species. • The two Swertia species exhibit significant differences in their metabolic profiling. • Nine metabolic markers responsible for the differences are screened out. • A qHNMR method is used for quantitative analysis of the discriminating metabolites. • The proposed 1H NMR-based metabolomics method is rapid, reliable and effective.
Swertia mussotii Franch. and Swertia chirayita Buch.-Ham. have been commonly used under the same name “Zangyinchen” for the treatment of liver and gallbladder diseases in traditional Tibetan medicine. Detailed characterization and comparison of the complete set of metabolites of these two species are critical for their objective identification and quality control. In this study, a rapid, simple and comprehensive 1H NMR-based metabolomics method was first developed to differentiate the two species. A broad range of metabolites, including iridoid glycosides, xanthones, triterpenoids, flavonoids, carbohydrates, and amino acids, were identified. Statistical analysis showed evident differences between the two species, and the major markers responsible for the differences were screened. In addition, quantitative 1H NMR method (qHNMR) was used for the target analysis of the discriminating metabolites. The results showed that S. mussotii had significantly higher contents of gentiopicrin, isoorientin, glucose, loganic acid, and choline, whereas S. chirayita exhibited higher levels of swertiamarin, oleanolic acid, valine, and fatty acids. These findings indicate that 1H NMR-based metabolomics is a reliable and effective method for the metabolic profiling and discrimination of the two Swertia species, and can be used to verify the genuine origin of Zangyinchen.