title: [Determination of imperatorin in tetraploidy radix Angelicae dahuricae].
abstract: OBJECTIVE
  To determine the content of imperatorin in the tetraploidy radix angelicae dahuricae, and compare it with the original diplontic varites.
  
  
  METHODS
  The chromatographic method was carried out on Nova-pak (4.6 mm x 200 mm, 5 microns) column with acetonitrile-water solution as a mobile phase. The flow rate was 1 ml.min-1. the detection wavelength was at 248 nm, and the column temperature was 25 degrees C.
  
  
  RESULTS
  The eontent of was imperatorin in the tetraploidy radix 0.460% and 0.225% imperatorin in the diplontic species.
  
  
  CONCLUSIONS
  The content of the mainly active constituent in the tetraploid is double to what it is in the original diplontic species.
authors.affiliation: Hunan College of TCM, Changsha 410004, Hunan, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Peng
authors.forename: Sheng
authors.initials: S
authors.lastname: Zhang
authors.forename: Ta-si
authors.initials: TS
authors.lastname: Liu
authors.forename: Bing-mei
authors.initials: BM
authors.lastname: Xiao
mesh_terms: D029969:Angelica / Q000737:chemistry* / Q000235:genetics*; D011564:Furocoumarins / Q000032:analysis*; D018517:Plant Roots / Q000737:chemistry / Q000235:genetics; D010946:Plants, Medicinal / Q000737:chemistry* / Q000235:genetics*; D011123:Polyploidy
chemical_list: D011564:Furocoumarins; C031534:imperatorin