title: [Isolation-preparation and determination of chromones from Saposhnikovia divaricata].
abstract: OBJECTIVE
  To compare the contents of chromones in the different isolation and purification procedures from Saposhnikovia divaricata.
  
  
  METHODS
  The separation of six chromones was determined simultaneously by HPLC on a Kromasil C18 column at 35 degrees C with the methanol-0.1% phosphoric acid in gradient elution as the mobile phrase. The detection wavelength was set at 254 nm and the flow rate was 1.0 mL x min(-1).
  
  
  RESULTS
  All the obtained correlation coefficient of the six components was over 0.9995 and the average recoveries were not less than 97% (RSD <5%), respectively.
  
  
  CONCLUSIONS
  The method is simple, accurate with good reproducibility. Results showed the better preparation procedure is water-decoction and ethanol-precipitation with resin separation and silica gel purification.
authors.affiliation: Institute of Chinese Materia Madica, China Academy of Chinese Medicial Sciences, Beijing 100700, China.
authors.forename: Cun
authors.initials: C
authors.lastname: Zhang
authors.forename: Yong-qing
authors.initials: YQ
authors.lastname: Xiao
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Zhen
authors.initials: Z
authors.lastname: Pang
authors.forename: Gui-liu
authors.initials: GL
authors.lastname: Li
mesh_terms: D019661:Apiaceae / Q000737:chemistry*; D002867:Chromones / Q000032:analysis* / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D002867:Chromones