Comparative study of bioactive constituents in crude and processed Glycyrrhizae radix and their respective metabolic profiles in gastrointestinal tract in vitro by HPLC-DAD and HPLC-ESI/MS analyses

Two HPLC methods with diode array detection (HPLC-DAD) and electrospray ionization-mass spectrometry (HPLC-ESI/MS), respectively, were developed to investigate the differences of chemical constituents and their metabolism in gastrointestinal tract in vitro between two decoctions of crude and process...

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Bibliographic Details
Published in:Archives of pharmacal research 2012, 35(11), , pp.1945-1952
Main Authors: Huang, Wen-wu, Wang, Meng-yue, Shi, Hai-ming, Peng, Ying, Peng, Chong-sheng, Zhang, Min, Li, Yue, Lu, Jing, Li, Xiao-bo
Format: Article
Language:English
Subjects:
Chromatography, High Pressure Liquid - methods
Gastric Juice - metabolism
Glycyrrhiza - chemistry
Humans
In Vitro Techniques
Intestinal Secretions - metabolism
Intestinal Secretions - microbiology
Medicine
Pharmacology/Toxicology
Pharmacy
Plant Extracts - chemistry
Plant Extracts - metabolism
Plant Roots
Research Article
Spectrometry, Mass, Electrospray Ionization - methods
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Summary:Two HPLC methods with diode array detection (HPLC-DAD) and electrospray ionization-mass spectrometry (HPLC-ESI/MS), respectively, were developed to investigate the differences of chemical constituents and their metabolism in gastrointestinal tract in vitro between two decoctions of crude and processed Glycyrrhizae radix . Total of eleven constituents (liquiritin apioside, liquiritin, licuraside, isoliquiritin, ononin, glycyrrhizin, liquiritigenin-7,4′-diglucoside, licorice saponin A3, 22β-acetoxylglycyrrhizic acid, licorice saponin G2, and yunganoside E2) were identified in the two decoctions, whereas lower contents of these constituents were usually found in the decoction of processed G. radix . Furthermore, these constituents were metabolized into their respective aglycons in human intestinal bacteria juice, and the metabolism ratios were all higher in processed G. radix decoction. No change was found in artificial gastric or intestinal juice. This study revealed that the processing can alter the contents of main constituents in crude G. radix and their metabolism in gastrointestinal tract, in which intestinal bacteria play an important role in the metabolism of licorice constituents.
ISSN:0253-6269
1976-3786
DOI:10.1007/s12272-012-1111-x