title: [HPLC determination of oleanolic acid and llrolic acid in Chinese medicinal herbs].
abstract: OBJECTIVE
  To develop a new method for simultaneous determination of oleanolic acid and llrolic acid in Chinese medicinal herbs at the same time.
  
  
  METHODS
  HPLC was carried out on a Shim-pack CLC-ODS column using MeOH-H2O-HOAc-TEA (83:17:0.04:0.02).
  
  
  CONCLUSIONS
  The average recovery of oleanolic acid and llrolic acid was 103.3 +/- 2.07% and 102.7% +/- 0.65% respectively.
authors.affiliation: Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing 210009, Jiangsu, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Xie
authors.forename: T J
authors.initials: TJ
authors.lastname: Hang
authors.forename: Z
authors.initials: Z
authors.lastname: Cheng
authors.forename: Z X
authors.initials: ZX
authors.lastname: Zhang
authors.forename: D K
authors.initials: DK
authors.lastname: An
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D032064:Hedyotis / Q000737:chemistry; D031659:Ligustrum / Q000737:chemistry; D031333:Lycopus / Q000737:chemistry; D009828:Oleanolic Acid / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000032:analysis*; D000097245:Ursolic Acid
chemical_list: D009828:Oleanolic Acid; D014315:Triterpenes; D000097245:Ursolic Acid