title: Isolation and purification of orientin and vitexin from Trollius chinensis Bunge by high-speed counter-current chromatography.
abstract: Orientin and vitexin are the two main bioactive compounds in Trollius chinensis Bunge. In this study, a rapid method was established for the isolation and purification of orientin and vitexin from T. chinensis Bunge using high-speed counter-current chromatography in one step, with a solvent system of ethyl acetate-ethanol-water (4:1:5, v/v/v). A total of 9.8 mg orientin and 2.1 mg vitexin were obtained from 100 mg of the ethyl acetate extract, with purities of 99.2% and 96.0%, respectively. Their structures were identified by UV, MS and NMR. The method was efficient and convenient, which could be used for the preparative separation of orientin and vitexin from T. chinensis Bunge.
authors.affiliation: a School of Pharmaceutical Sciences, Guangzhou Higher Education Mega Center, Sun Yat-Sen University , 132 Waihuan Rd. East, 510006 Guangzhou , P.R. China.
authors.forename: Xiao-Xue
authors.initials: XX
authors.lastname: Yu
authors.forename: Jie-Yun
authors.initials: JY
authors.lastname: Huang
authors.forename: Dan
authors.initials: D
authors.lastname: Xu
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Xie
authors.forename: Zhi-Sheng
authors.initials: ZS
authors.lastname: Xie
authors.forename: Xin-Jun
authors.initials: XJ
authors.lastname: Xu
mesh_terms: D047310:Apigenin / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D003377:Countercurrent Distribution; D005419:Flavonoids / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D019906:Nuclear Magnetic Resonance, Biomolecular; D029626:Ranunculaceae / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D005960:Glucosides; D047310:Apigenin; C032731:vitexin; C065886:orientin
keywords: HSCCC; Trollius chinensis Bunge; isolation; orientin; purification; vitexin