title: [GC-MS analysis of chemical components in seeds oil from Croton tiglium].
abstract: OBJECTIVE
  To identify the chemical components and their relative content in seeds oil from Croton tiglium.
  
  
  METHODS
  The oil obtained by extracting of the seeds of Croton tiglium with petroleum ether was subjected to methyl-esterification or dilution with ethylether. GC-MS were used to identify the components in croton oil,peak area normalization method was used to determine the relative content of these substances in the sample.
  
  
  RESULTS
  Seventeen fat acid components were identified from croton oil. The main components were linoleic acid, oleic acid, and eicosenoic acid in methyl-esterified sample, whose quantities accouted for 77.33%. In addition, five aromatic compounds were also found in the sample diluted with ethylether, such as isoborneol, fenchyl alcohol, etc. Phorbol esters, having carcinogenesis and anti-HIV-1 effects, were not been identified.
  
  
  CONCLUSIONS
  There are abundant of linoleic acid, oleic acid and eicosenoic acid in the seeds oil extracted from Chinese Croton tiglium. In contrast, the active component with carcinogenesis and anti-HIV-1 might be very rare in the samples and difficult to be obtained by ordinary separating and extracting methods.
authors.affiliation: Department of Gastroenterology, the Affiliated Hospital of Shaoxing University, Shaoxing 312000, China. meilsx@163.com
authors.forename: Mei
authors.initials: M
authors.lastname: Lan
authors.forename: Ping
authors.initials: P
authors.lastname: Wan
authors.forename: Zhi-Ying
authors.initials: ZY
authors.lastname: Wang
authors.forename: Xiao-Lan
authors.initials: XL
authors.lastname: Huang
mesh_terms: D029802:Croton / Q000737:chemistry*; D003436:Croton Oil / Q000737:chemistry* / Q000302:isolation & purification; D005227:Fatty Acids / Q000032:analysis* / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D019787:Linoleic Acid / Q000032:analysis / Q000737:chemistry; D015394:Molecular Structure; D009636:Norbornanes / Q000032:analysis / Q000737:chemistry; D019301:Oleic Acid / Q000032:analysis / Q000737:chemistry; D012639:Seeds / Q000737:chemistry*
chemical_list: D005227:Fatty Acids; D009636:Norbornanes; D019301:Oleic Acid; D003436:Croton Oil; D019787:Linoleic Acid