title: [Studies on saponin accumulative in regularities Panax notoginseng (Burk) F. H. Chen].
abstract: OBJECTIVE
  To determine the optimal harvest time for P. notoginseng through studying the changes of saponin contents with growth periods.
  
  
  METHODS
  P. notoginseng samples were collected from the experimental plot regularly, and then the contents of total saponin and some main single saponins were analyzed by HPLC.
  
  
  RESULTS
  Total saponin contents decreased from April through July, and increased from August through December.
  
  
  CONCLUSIONS
  The optimal harvest time is determined as from October through December, which corresponds to the traditional harvest time.
authors.affiliation: Wenshan Research Institute of Sanqi Science and Technology, Wenshan 663000, Yunnan, China.
authors.forename: X M
authors.initials: XM
authors.lastname: Cui
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Chen
authors.forename: C L
authors.initials: CL
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Zeng
mesh_terms: D036145:Ginsenosides / Q000032:analysis; D005894:Panax / Q000737:chemistry* / Q000254:growth & development; D010946:Plants, Medicinal / Q000737:chemistry* / Q000254:growth & development; D012503:Saponins / Q000032:analysis*; D012621:Seasons
chemical_list: D036145:Ginsenosides; D012503:Saponins; C442759:ginsenoside Rb1; C035054:ginsenoside Rg1