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Using the UPLC–ESI–Q‐TOF–MS E method and intestinal bacteria for metabolite identification in the nonpolysaccharide fraction from Bletilla striata
Author(s) -
Yang Chang,
Xia Tao,
Wang Changquan,
Sun Huiyuan,
Li Yongjun,
Gong Zipeng,
Li Yueting,
Zheng Lin,
Huang Yong
Publication year - 2019
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.4637
Subject(s) - chemistry , chromatography , metabolite , tandem mass spectrometry , metabolic pathway , mass spectrometry , quadrupole time of flight , fraction (chemistry) , herb , electrospray ionization , biochemistry , medicinal herbs , metabolism , traditional medicine , medicine
Bletilla striata (Thunb.) Reichb. f. (Orchidaceae), also known as Bai‐ji, is a traditional Chinese herb that is widely used in Asia to treat hematemesis, hemoptysis, traumatic bleeding and other similar disorders. Most studies have focused on the pharmacological activities of polysaccharide extracts from B. striata . Our previous studies found that the nonpolysaccharide fraction from B. striata extract also has a hemostatic effect; however, the active constituents responsible for this pharmacological action are unclear. Thus, the metabolic profiles of the nonpolysaccharide fraction were investigated in Sprague–Dawley rats and intestinal bacteria models using ultra‐performance liquid chromatography coupled with quadrupole time‐of‐flight tandem mass spectrometry. Mass data were acquired by the MS E method. Eight components including five prototypes and three metabolites were identified in rat biofluids after oral administration of the nonpolysaccharide fraction. The parent compounds underwent various metabolic processes, including hydrolysis, deglucosylation, glycosylation and sulfate conjugation. The results not only reveal the possible metabolic pathway, but also indicate the potential pharmacological components. Further mechanistic studies using nonpolysaccharide compounds of the B. striata extract are required to obtain potential candidate compounds.