Chem. J. Chinese Universities

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Studies on the Biotransformation of Aconitine in Human Intestinal Bacteria Using Soft-ionization Mass Spectrometry

ZHAO Yu-Feng1,2, SONG Feng-Rui1, GUO Xin-Hua1, LIU Shu-Ying1*   

    1. Changchun Center of Mass Spectrum, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • Received:2007-05-09 Revised:1900-01-01 Online:2008-01-10 Published:2008-01-10
  • Contact: LIU Shu-Ying

Abstract: To study the biotransformation of aconitine in human intestine, aconitine was incubated with human intestinal bacteria in vitro. Aconitine and its metabolites formed the protonated molecule [M+H]+ in positive ion mode. According to the m/z of [M+H]+, the metabolites of aconitine were investigated by electrospray ionization tandem mass spectrometry directly. Aconitine can be transformed by human intestinal bacteria. Aconitine was converted into more than twenty kinds of new metabolites such as mono-ester aconitum alkaloids, diester aconitines and lipo-alkaloids by deacetylation, dehydroxylation, demethylation and esterification.

Key words: Aconitine, Human intestinal bacteria, Biotransformation, Electrospray ionization mass spectrometry

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