title: [UPLC Fingerprint of Oldenlandia corymbosa].
abstract: OBJECTIVE
  To establish the UPLC fingerprint of Oldenlandia corymbosa from different regions and to distinguish it from Oldenlandia diffusa.
  
  
  METHODS
  UPLC procedure was performed on an ACQUITY UPLC BEH C18 (50 mm x 2. 1 mm, 1. 7 µm) column and eluted with a mobile phase consisted of methanol-l % acetic acid at a flow rate of 0. 2 mL/min. The column temperature was 30 °C . The detection wavelength was 254 nm. A matrix was constructed for similarity evaluation, cluster analysis and principle component analysis.
  
  
  RESULTS
  The collected samples had a good similarity. A specificity fingerprint chromatogram was produced and 15 common peaks were designated. Samples were divided into four groups.
  
  
  CONCLUSIONS
  It is a reliable and available method for specific identification of Oldenlandia corymbosa and for distinguishing Oldenlandia corynbosa and Oldenlandia diffusa.
authors.forename: Hong-quan
authors.initials: HQ
authors.lastname: Li
authors.forename: Yi
authors.initials: Y
authors.lastname: Cao
authors.forename: Yu-bing
authors.initials: YB
authors.lastname: Bai
authors.forename: Bo-hou
authors.initials: BH
authors.lastname: Xia
authors.forename: Li-mei
authors.initials: LM
authors.lastname: Lin
authors.forename: Duan-fang
authors.initials: DF
authors.lastname: Liao
mesh_terms: D002851:Chromatography, High Pressure Liquid; D016000:Cluster Analysis; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D032067:Oldenlandia / Q000737:chemistry* / Q000145:classification; D064209:Phytochemicals / Q000737:chemistry* / Q000302:isolation & purification; D025341:Principal Component Analysis; D011786:Quality Control
chemical_list: D004365:Drugs, Chinese Herbal; D064209:Phytochemicals