Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (7): 1390.doi: 10.7503/cjcu20180812

• Analytical Chemistry • Previous Articles     Next Articles

Biotransformation of Rare Protopanaxadiol Saponin by Human Intestinal Microflora

HAN Mingxin, LI Fangtong, ZHANG Yan, DAI Yulin, ZHENG Fei*(), YUE Hao*()   

  1. Changchun University of Chinese Medicine, Jilin Ginseng Academy, Changchun 130117, China
  • Received:2018-12-03 Online:2019-07-10 Published:2019-07-12
  • Contact: ZHENG Fei,YUE Hao E-mail:zhengfei@ccucm.edu.cn;yuehao@sohu.com
  • Supported by:
    † Supported by the National Key R&D Program of China(No.2017YFC1702105), the 13th Five?Year Science and Technology Development Plan Project of Jilin Province, China(No.JJKH20181270KJ) and the Science and Technology Development Project of Jilin Province, China(No.20180311019YY).

Abstract:

The rapid resolution liquid chromatography-quadrupole time-of-flight mass spectrometry(RRLC-Q-TOF MS) method and ultra high performance liquid chromatography-triple quadruple mass spectrometry(UPLC-QQQ MS) method were applied for qualitative and quantitative analyzing the biotransformation process of rare protopanaxadiol saponin Rd, Rg3, F2, CK and Rh2 under intestinal micro flora in vitro. The rare protopanaxadiol saponin Rd, F2, Rg3, CK, Rh2 and intestinal micro flora were cultured in vitro at 37 ℃ under anaerobic condition. The mass spectrometrics detection with electrospray ionization under negative ion mode was applied for identifying the metabolites, monitoring content variation, and matching metabolic pathways. The results show ginsenoside Rd is mainly metabolized into five products of F2, Rg3, CK, Rh2 and PPD. Ginsenoside F2 is mainly metabolized into two products of CK and PPD. Ginsenoside Rg3 is mainly metabolized into two products CK and PPD. Ginsenosides CK and Rh2 are both mainly metabolized into one product PPD. Ginsenosides Rd, F2 and Rg3 are metabolized completely into metabolic products, but ginsenosides CK and Rh2 are not, under human intestinal micro flora condition in vitro. The results also indicated that deglycosylation reaction was the major metabolic pathway of rare protopanaxadiol saponin under the human intestinal microflora condition. And that monoglycosides and aglycone may be the material basis for rare protopanaxadiol saponin to exert its efficacy in human body.

Key words: Rare protopanaxadiol saponin, Human intestinal micro flora, Biotransformation, Liquid chromatography-mass spectrometry

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