title: [Study on HPCE fingerprint of Eucommiae Cortex].
abstract: OBJECTIVE
  To establish the analytical method for the fingerprint of Eucommiae Cortex by HPCE and compare the fingerprints of Eucommiae Cortex and its processed products.
  
  
  METHODS
  Based on the mode of high performance capillary electrophoresis, 60 mmol/L sodium borate-20 mmol/L sodium dihydrogen phosphate-10% methanol (pH 10.0) was used as buffer solution. The separation voltage was 20 kV and the detection wavelength was set at 210 nm. Pinoresinol diglucoside was used as a reference standard, the chromatographic fingerprint were determined. The data were analyzed by fuzzy cluster and fingerprint similarity evaluation softwarewas used to compare the similarity of samples.
  
  
  RESULTS
  HPCE fingerprints with 10 common peaks of Eucommiae Cortex were established preliminarily. It was discovered that a small number of samples differed from others. Regarding to the fingerprints of Eucommiae Cortex 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 Eucommiae Cortex.
authors.affiliation: Nanjing University of Chinese Medicine, Nanjing 210046, China.
authors.forename: Xing-Sheng
authors.initials: XS
authors.lastname: Fu
authors.forename: Le
authors.initials: L
authors.lastname: Han
authors.forename: Xun-Hong
authors.initials: XH
authors.lastname: Liu
authors.forename: Hu
authors.initials: H
authors.lastname: Xu
authors.forename: Jun-Song
authors.initials: JS
authors.lastname: Li
authors.forename: Bao-Chang
authors.initials: BC
authors.lastname: Cai
authors.forename: Yan
authors.initials: Y
authors.lastname: Yang
mesh_terms: D001881:Borates / Q000737:chemistry; D016000:Cluster Analysis; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000592:standards; D019075:Electrophoresis, Capillary / Q000379:methods*; D031283:Eucommiaceae / Q000737:chemistry; D024301:Plant Bark / Q000737:chemistry; D011786:Quality Control; D015203:Reproducibility of Results
chemical_list: D001881:Borates; D004365:Drugs, Chinese Herbal; C010634:sodium borate