title: [GC-MS analysis for volatile components from alpiniae katsumadai semen by three extraction methods].
abstract: OBJECTIVE
  To analysis the volatile components in Alpiniae Katsumadai Semen.
  
  
  METHODS
  The volatile components were extracted from Alpiniae Katsumadai Semen by steam distillation, head space injection and supercritical fluid extraction respectively, and then analyzed by GC-MS combined with Kovat's retention index.
  
  
  RESULTS
  The volatile components extracted by steam distillation or head space extraction were found more likely to be terpenoids, whereas components extracted by supercritical fluid extraction were more likely to be alkenes, alcohols and aromatic compounds.
  
  
  CONCLUSIONS
  Different sample pre-treatment methods are focused on different types of volatile components; Identification of the volatile components by GC-MS combined with Kovat's retention index is more accurate and rapid.
authors.forename: Bin-Bin
authors.initials: BB
authors.lastname: Yang
authors.forename: Rong
authors.initials: R
authors.lastname: Rong
authors.forename: Jin-Fang
authors.initials: JF
authors.lastname: Hu
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Qing-Tao
authors.initials: QT
authors.lastname: Lv
authors.forename: Hai-Qiang
authors.initials: HQ
authors.lastname: Jiang
mesh_terms: D000475:Alkenes / Q000032:analysis; D032429:Alpinia / Q000737:chemistry*; D002245:Carbon Dioxide; D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D057168:Distillation / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification*; D012639:Seeds / Q000737:chemistry; D013227:Steam; D013729:Terpenes / Q000032:analysis
chemical_list: D000475:Alkenes; D004365:Drugs, Chinese Herbal; D009822:Oils, Volatile; D013227:Steam; D013729:Terpenes; D002245:Carbon Dioxide