Construction of a rapid identification method for chemical constituents in traditional Chinese medicine based on liquid chromatography- hybrid mass spectrometry-database

Author(s):  
QIAN Ye-fei
2013 ◽  
Vol 41 (05) ◽  
pp. 1181-1198 ◽  
Author(s):  
Yi Dai ◽  
Feng-Juan Tu ◽  
Zhi-Hong Yao ◽  
Bo Ding ◽  
Wen Xu ◽  
...  

The traditional Chinese medicine fufang preparation "Xian-Ling-Gu-Bao" capsule (XLGB), which is composed of six herbal medicines, is popularly used for the treatment of osteoporosis. A reliable and effective method using LC-linear ion trap (LTQ)/Orbitrap mass spectrometry for rapid screening and identification of chemical constituents in "Xian-Ling-Gu-Bao" capsule is described in this paper. Based on the UV spectrum, mass spectrum, and the chemical components isolated from the original plants of XLGB, 118 compounds were identified or tentatively characterized, including 58 flavonoid glycosides, six prenylated flavonones, five prenylated isoflavones, six prenylated chalcones, four xanthone C-glycosides, 13 saponins, eight phenolic acids, five coumarins, three lignans, three iridoids, five phenethyl alcohol glycosides, one tanshinone and one alkaloid. This work might be helpful for the quality control and further pharmacokinetic studies of XLGB, and provided a good example for the rapid identification of chemical constituents in traditional Chinese medicine fufang preparation. Moreover, the identification strategy for the linkages of sugar residues in flavonol O-glycosides was summarized in the study. The diagnostic fragment ions at m/z 185 [ C 12 H 9 O 2] and 157 [ C 11 H 9 O ], which distinguish C -6 and C -8 prenylated flavonoids, were reported for the first time.


Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 233 ◽  
Author(s):  
Huanyu Guan ◽  
Xiaomei Luo ◽  
Xiaoyan Chang ◽  
Meifeng Su ◽  
Zhuangzhuang Li ◽  
...  

Wen Luo Yin (WLY), a well-known traditional Chinese medicine formulation, has been used as a complementary therapy for the treatment of rheumatoid arthritis in clinical settings. However, the chemical constituents of WLY remain unclear. In this study, a high-performance liquid chromatography coupled with tandem mass spectrometry method was established to separate and comprehensively identify the chemical constituents of WLY. The analytes were eluted with a mobile phase of acetonitrile and 0.1% aqueous acetic acid. Mass detection was performed in both positive and negative ion mode. The MS/MS fragmentation pathways were proposed for the identification of the components. A total of 42 compounds including sesquiterpenes, alkaloids, biflavonoids, polyacetylenes, phenylpropanoids and acetylenic phenols were identified unambiguously or tentatively according to their retention times and mass behavior with those of authentic standards or literature data. The identification and structural elucidation of chemical constituents may provide important information for quality control and pharmacological research of WLY.


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