Study on the Quality Standards of Tibetan Medicine Bailiang Duhuo
Objective In order to better standardize and control the quality of Tibetan medicine Bailiang Duhuo,the quality standards were studied so as to provide a scientific basis for its quality control.Methods Referring to the rel-evant methods specified in the 2020 edition of the Pharmacopoeia of the people's Republic of China,the characters,microscopic characteristics and inspection items of Bailiang Duhuo medicinal materials were detected.The thin-layer chromatography(TLC)method was used to establish a thin-layer identification method with silica gel G as the thin-layer plate,petroleum ether(60-90)-ethyl acetate(3:1)as the developing solvent,and imperatorin as the reference substance.Results The microscopic identification characteristics and thin-layer identification characteristics of Ti-betan medicine Bailiang Duhuo were described accurately.Its moisture content is 9.9%-11.0%,the total ash is 5.4%-9.1%,the acid-insoluble ash is 0.79%-4.98%,and the content of water-soluble extract is 30.71%-38.83%.Conclusion This study was the first to comprehensively investigate the quality indexes of Bailiang Duhuo medicinal materials in Xizang,and its quality could be effectively evaluated.
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