title: [Study on the dynamic change of flavonoids content in Mentha haplocalyx].
abstract: OBJECTIVE
  To determine the dynamic change of total flavonoids and its main aglycone and glycoside content in Mentha haplocalyx Briq.
  
  
  METHODS
  Using UV-VIS spectrum and HPLC method for the total flavonoids and its aglycone and glycoside.
  
  
  RESULTS
  The accumulation of flavonoids showed a regular pattern.
  
  
  CONCLUSIONS
  The contents of total flavonoids and its main aglycone and glycoside are highest in the traditional harvesting time.
authors.affiliation: Guangzhou Institute for Drug Control, Guangzhou 510160, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Lin
authors.forename: Jin-ao
authors.initials: JA
authors.lastname: Duan
authors.forename: Da-wei
authors.initials: DW
authors.lastname: Qian
authors.forename: Shi-hui
authors.initials: SH
authors.lastname: Qian
authors.forename: Ling-ying
authors.initials: LY
authors.lastname: Zhu
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D005419:Flavonoids / Q000032:analysis* / Q000737:chemistry*; D006027:Glycosides / Q000032:analysis*; D027541:Mentha / Q000737:chemistry* / Q000254:growth & development; D010946:Plants, Medicinal / Q000737:chemistry* / Q000254:growth & development; D012621:Seasons; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005419:Flavonoids; D006027:Glycosides