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Diagnostic fragment‐ion‐based extension strategy for rapid screening and identification of serial components of homologous families contained in traditional Chinese medicine prescription using high‐resolution LC‐ESI‐ IT‐TOF/MS: Shengmai injection as an example
Author(s) -
Zheng Chaonan,
Hao Haiping,
Wang Xuan,
Wu Xiaolan,
Wang Guangji,
Sang Guowei,
Liang Yan,
Xie Lin,
Xia Chunhua,
Yao Xilin
Publication year - 2009
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.1502
Subject(s) - chemistry , fragment (logic) , high resolution , identification (biology) , extension (predicate logic) , medical prescription , chromatography , computational biology , combinatorial chemistry , pharmacology , algorithm , medicine , botany , remote sensing , biology , programming language , geology , computer science
The paper presents a modified and universally applicable diagnostic fragment‐ion‐based extension strategy (DFIBES) to efficiently process the information acquired by liquid chromatography‐electrospray ionization source in combination with hybrid ion trap and high‐resolution time‐of‐flight mass spectrometry [LC‐(ESI)‐IT‐TOF/MS], facilitating the structural determination of serial components contained in traditional Chinese medicine prescription (TCMP). The key advantage of DFIBES is that it facilitates the rapid classification of the complicated peaks into well‐known chemical families, which significantly simplifies the complicated procedures of structural characterization. Moreover, considering that a certain family of compounds usually produces identical fragment ions, the DFIBES would be widely applicable to many other families of compounds identification besides the presently validated ginsenosides and lignans. Shengmai injection , composed of Panax ginseng, Radix ophiopogonis , and Schisandra chinensis , was taken as a TCMP example to conduct and validate the proposed DFIBES. Diagnostic fragment ions (DFI) for each chemical family contained in Shengmai injection was firstly determined or proposed from the separated analysis of 15 authentic standards and the extract of S. chinensis . The ESI‐MS n fragmentation patterns of ginsenosides and lignans were then systematically studied for developing the ‘structure extension’ approach. Upon LC‐IT‐TOF/MS analysis and DFIBES, more than 30 ginsenosides and 20 lignans have been rapidly detected and identified from Shengmai injection , supporting that the DFIBES is a very powerful strategy and would be widely applicable for the complicated components identification from TCMP and other complicated mixtures. Copyright © 2008 John Wiley & Sons, Ltd.