title: [Study on quality standard of Sophora flavescens root extract].
abstract: As a part of the project for the Chinese Pharmacopoeia (2015 edition), the quality standard of Sophora flavescens root extract was investigated and established. According to the methods described in the Appendix of Chinese Pharmacopoeia (2010 edition), the water and ash inspections were carried out. The marker components trifolirhizin, sophoraflavanone G, oxymatrine and oxysophocarpine in the samples were identified by qualitative TLC. The determination of oxymatrine, matrine, oxysophocarpine and sophocarpine was conducted by HPLC and the total flavonoids were measured by ultraviolet spectrophotometry, using sophoraflavanone G as reference substance. The results indicated the spots on the plate were clear with good resolution and the contents of oxymatrine, matrine, oxysophocarpine and sophocarpine in the 13 batches of the samples were 3.87% - 11.1%, 0.970% - 4.33%, 1.30% - 2.59% and 0.260% - 1.14%, respectively. The total flavoids in the 13 batches of the samples were 3.88% - 7.93%. In the study, the validated methods were reproducible and the established quality standard was feasible, which could be used for the quality control of S. flavescens root extract and related preparations.
authors.forename: Feng-chun
authors.initials: FC
authors.lastname: Zhao
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.forename: Liang-mian
authors.initials: LM
authors.lastname: Chen
authors.forename: Hui-min
authors.initials: HM
authors.lastname: Gao
authors.forename: Qi-wei
authors.initials: QW
authors.lastname: Zhang
authors.forename: Zhi-min
authors.initials: ZM
authors.lastname: Wang
authors.forename: Pi-e
authors.initials: PE
authors.lastname: Wu
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis; D018517:Plant Roots / Q000737:chemistry; D029909:Sophora / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D010936:Plant Extracts