Chemotaxonomic studies of nine Paris species from China based on ultra-high performance liquid chromatography tandem mass spectrometry and Fourier transform infrared spectroscopy
文献类型： 外文期刊
作者： Wang, Yuanzhong 1 ; Liu, Ehu 1 ; Li, Ping 1 ;
作者机构： 1.China Pharmaceut Univ, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R China
2.Yunnan Acad Agr Sci, Inst Med Plants, Kunming 650200, Peoples R China
关键词： Paris species;Chemotaxonomy;Steroid saponins;UHPLC-MS/MS;FT-IR
期刊名称：JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS （ 影响因子：3.935； 五年影响因子：3.563 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： Paris species, which contain steroid saponins, have been used as herb folk medicines in Asia. In the present study, a comprehensive strategy based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) and Fourier transform infrared (FT-IR) spectroscopy was firstly proposed to evaluate the chemotaxonomic relationships of nine Paris species sampled from different geographical regions in China. Principle component analysis (PCA) based on FT-IR data revealed chemical similarities in term of the nine species and geographical regions, indicating the accumulation of metabolites affected by the combination of geographical factors and species. The chemotaxonomic relationships of four species supported the morphological taxonomy and implied ancestry from P. polyphylla. After high-efficiency chromatographic separation, ions trap/time-of-flight mass spectrometry (IT-TOFMS) and triple quadrupole mass spectrometry (QQQ-MS) were used to identify unknown metabolites and simultaneously determine six key compounds (polyphyllin I, II, V, VI, VII and gracillin) in Paris species, respectively. The tentative identification of 22 steroid saponins was indicative of a common biosynthetic pathway in Paris species. Phytoecdysones, gracillin and open-chain steroid saponins were considered as key precursors. According to Pearson's correlation analysis, an insignificant correlation was found between diosgenin-type and pennogenin-type saponins belonging to the same biosynthetic pathways in the current stage. Our results could provide a reasonable foundation for chemotaxonomy or further studies of Paris species. (C) 2017 Elsevier B.V. All rights reserved.
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