title: [Study on the volatile oil by SFE-CO, from crude and processed Rhizoma Atractylodis by GC-MS].
abstract: OBJECTIVE
  To analyze the chemical constituents of the volatile oil by SFE-CO2 from Rhizoma Atractylodis and its roasted products.
  
  
  METHODS
  The chemical constituents of the volatile oil extracted by SFE-CO2 were separated and identified by GC-MS.
  
  
  RESULTS
  33 kinds of constituents were identified from Atractylodes lancea (Thunb.) DC. and its roasted products. The relative contents of 12 kinds of constituents from the processing products were descended and 7 kinds were ascended; 30 kinds of constituents were identified from Atractylodes chinensis (DC.) Koidz. and its roasted products. The relative contents of 10 kinds of constituents from the roasted products were descended and 11 kinds were ascended.
  
  
  CONCLUSIONS
  In the processed products, the relative contents of some low boiling point constituents are descended but some high are ascended.
authors.affiliation: Hubei College of Traditional Chinese Medicine, Wuhan 430061, China.
authors.forename: La-ying
authors.initials: LY
authors.lastname: Xu
authors.forename: Lian-qi
authors.initials: LQ
authors.lastname: Tian
authors.forename: Kai
authors.initials: K
authors.lastname: Li
authors.forename: Shao-wen
authors.initials: SW
authors.lastname: Chen
authors.forename: Yi
authors.initials: Y
authors.lastname: Mao
mesh_terms: D031174:Atractylodes / Q000737:chemistry* / Q000145:classification; D002245:Carbon Dioxide; D025924:Chromatography, Supercritical Fluid / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry; D015394:Molecular Structure; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D013678:Technology, Pharmaceutical / Q000379:methods*; D013729:Terpenes / Q000032:analysis / Q000302:isolation & purification
chemical_list: D004365:Drugs, Chinese Herbal; D009822:Oils, Volatile; D013729:Terpenes; D002245:Carbon Dioxide