title: [Chemical components of essential oils from the herb of Ligularia virgaurea].
abstract: OBJECTIVE
  To provide the foundation for reasonable utilization by analyzing the essential oils of Ligularia virgaurea.
  
  
  METHODS
  The essential oils were extracted by using steam distillation and separated with GC capillary columns. The components were quantitatively determined with normalization method, and were identified with GC-MS.
  
  
  RESULTS
  41 components were identified, which took up 72.73% of the essential oils.
  
  
  CONCLUSIONS
  The main components of essential oils were 4-methyl-1-(1-methylethyl)-3-cyclohexen-1-ol(14.369%), crotonic acid, 2,2-dimethyl-butanoic acid, 1-methyl-3-(1-methylethyl)-benzene, (1s-endo)-1,7,7-trimethyl-bicyclo[2,2,1]heptan-2-ol, trans-1-methyl-4-(1-methylethyl)-2-cyclohexen-1-ol, alpha-cadinol and alpha,alpha,4-trimethyl-3-cyclohexene-1-methanol.
authors.affiliation: State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China.
authors.forename: Yan-li
authors.initials: YL
authors.lastname: Tang
authors.forename: Yan-ru
authors.initials: YR
authors.lastname: Deng
authors.forename: Han-qing
authors.initials: HQ
authors.lastname: Wang
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002087:Butyrates / Q000032:analysis; D003437:Crotonates / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification; D010938:Plant Oils / Q000737:chemistry / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D013729:Terpenes / Q000032:analysis
chemical_list: D002087:Butyrates; D003437:Crotonates; D009822:Oils, Volatile; D010938:Plant Oils; D013729:Terpenes; C445364:cadinol; C074677:2,2-dimethylbutyric acid