title: [Study on the dynamic change of essential components in Folium Apocyni Veneti].
abstract: OBJECTIVE
  To determine the dynamic change of essential components in Folium Apocyni Veneti, and provide scientific basis for determining the best collecting time.
  
  
  METHODS
  The essential components of Folium Apocyni Veneti from different harvesting time were analyzed by HSGC-MS. The relative content of the components were determined with peak area normalization method, and the dynamic changes of 7 main bioactive components were determined.
  
  
  RESULTS
  39 constituents were separated and 38 compounds were identified. There were 21 co-containing compounds in Folium Apocyni Veneti from different harvesting time, the accumulation of which showed a regular pattern.
  
  
  CONCLUSIONS
  The main essential components in Folium Apocyni Veneti are the highest in the traditional harvesting time.
authors.affiliation: Yancheng Health Vocational & Technical College, Yancheng 224006, China.
authors.forename: Jian-ping
authors.initials: JP
authors.lastname: Song
authors.forename: Yue-chan
authors.initials: YC
authors.lastname: Zhang
authors.forename: Xun-hong
authors.initials: XH
authors.lastname: Liu
authors.forename: Li-juan
authors.initials: LJ
authors.lastname: Wang
mesh_terms: D030010:Apocynum / Q000737:chemistry* / Q000254:growth & development*; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D008610:Menthol / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D039821:Monoterpenes / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D009822:Oils, Volatile / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry* / Q000254:growth & development*; D012621:Seasons; D013997:Time Factors
chemical_list: D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D004365:Drugs, Chinese Herbal; D039821:Monoterpenes; D009822:Oils, Volatile; D008610:Menthol; C016775:alpha-terpineol; C019466:menthone