title: [Influence of Different Growing Years on Accumulation of Flavonoids and Saponins in Astragali Radix].
abstract: OBJECTIVE
  To study the effects of different growing years on the accumulation of flavonoids and saponins in Astragali Radix, in order to offer evidence to determine the most appropriate harvest time.
  
  
  METHODS
  HPLC method was developed for the determination of the contents of flavonoids and saponins.
  
  
  RESULTS
  The contents of flavonoids and saponins in different growing years of Astragali Radix existed obvious differences, the longer growing, the content was relatively higher.
  
  
  CONCLUSIONS
  With the increase of growing years, the contents of flavonoids and saponins are roughly rising year by year, the harvest time has a great influence on the accumulation of the compositions.
authors.forename: Bo
authors.initials: B
authors.lastname: Xin
authors.forename: Sheng-jun
authors.initials: SJ
authors.lastname: Ma
authors.forename: Jing
authors.initials: J
authors.lastname: Xie
authors.forename: Wen-quan
authors.initials: WQ
authors.lastname: Wang
authors.forename: Jun-ling
authors.initials: JL
authors.lastname: Hou
mesh_terms: D027883:Astragalus Plant / Q000737:chemistry* / Q000254:growth & development; D027885:Astragalus propinquus; D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005419:Flavonoids / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry / Q000254:growth & development; D012503:Saponins / Q000032:analysis*
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D012503:Saponins; C027492:Huang Qi