title: [Enrichment process of gentiopicroside from the leaves of Gentiana macropylla with macroporous resin].
abstract: OBJECTIVE
  To select the best type of macroporous resin for enriching gentiopicroside from the leaves of Gentiana macropylla, and study its optimal conditions and parameters.
  
  
  METHODS
  Adsorption and desorption characteristics of gentiopieroside were carried out on the resins. HPLC was used to determine the content of gentiopieroside.
  
  
  RESULTS
  The better resin D-101 was chosen, and the optimal parameters were obtained.
  
  
  CONCLUSIONS
  The process is feasible to enrich gentiopicroside from the leaves of Gentiana macropylla Pall.
authors.affiliation: Hunan Province Institute for Drug Control, Changsha 410001, China. fengni2002@sohu.com
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhao
authors.forename: Ru
authors.initials: R
authors.lastname: Zhang
authors.forename: Wen-ji
authors.initials: WJ
authors.lastname: Sun
mesh_terms: D000327:Adsorption; D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D000431:Ethanol / Q000737:chemistry; D029965:Gentianaceae / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D057888:Iridoid Glucosides; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D015203:Reproducibility of Results; D012117:Resins, Synthetic; D013678:Technology, Pharmaceutical / Q000379:methods*
chemical_list: D004365:Drugs, Chinese Herbal; D005960:Glucosides; D057888:Iridoid Glucosides; D039823:Iridoids; D012117:Resins, Synthetic; C012997:gentiopicroside; D000431:Ethanol