title: [Study on the HPCE fingerprint of Rehmannia glutinosa].
abstract: OBJECTIVE
  To establish the analytical method for the fingerprint of Rehmannia glutinosa by HPCE and compare the fingerprints of Rehmannia glutinosa and its processed products.
  
  
  METHODS
  Based on the mode of high performance capillary electrophoresis, 60 mmol/L sodium borate was used as buffer solution (5% MeOH, pH 9.5). The separation voltage was 20 kV and the detection wavelength was set at 210 nm. Catalpol was used as a reference standard, the chromatographic fingerprint were determined. The data were analyzed by fuzzy cluster and fingerprint similarity evaluation software was used to compare the similarity of samples.
  
  
  RESULTS
  HPCE fingerprints with 7 common peaks of Rehmannia glutinosa were established preliminarily. It was discovered that a small number of samples differed from others. Regarding to the fingerprints of Rehmannia glutinosa and its processed products, there were obvious differences in the relative areas of common peaks.
  
  
  CONCLUSIONS
  The method is reliable, accurate and can be used for quality control of Rehmannia glutinosa.
authors.affiliation: Nanjing University of Chinese Medicine, Nanjing 210046, China.
authors.forename: Hu
authors.initials: H
authors.lastname: Xu
authors.forename: Le
authors.initials: L
authors.lastname: Han
authors.forename: Xun-Hong
authors.initials: XH
authors.lastname: Liu
authors.forename: Xing-Sheng
authors.initials: XS
authors.lastname: Fu
authors.forename: Jun-Song
authors.initials: JS
authors.lastname: Li
authors.forename: Bao-Chang
authors.initials: BC
authors.lastname: Cai
authors.forename: Ze-Zhong
authors.initials: ZZ
authors.lastname: Shen
mesh_terms: D016000:Cluster Analysis; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000592:standards; D019075:Electrophoresis, Capillary / Q000379:methods*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry* / Q000254:growth & development; D011786:Quality Control; D032267:Rehmannia / Q000737:chemistry* / Q000254:growth & development; D015203:Reproducibility of Results
chemical_list: D004365:Drugs, Chinese Herbal