title: [Analyze on chemical compositions of Dalbergia odorifera essential oils extracted by CO2-supercritical-fluid-extraction and steam distillation extraction].
abstract: OBJECTIVE
  To analyze the chemical compositions of Dalbergia odorifera essential oils extacted by CO2-supercritical-fluid-extraction (SFE-CO2) and steam distillation extraction (SD).
  
  
  METHODS
  The essential oils of Dalbergia odorifera were extracted by steam distillation extraction and SFE-CO2. The chemical components were separated and analyzed by gas chromatography-mass spectrometry.
  
  
  RESULTS
  12 compounds were identified in SFE sample. The major components from essential oils were 2-propenoic acid-3(4-methoxyphenyl)-ethyl ester (14.53%), nerolidol (14.95%), ageratochromene (1.33%). 9 compounds were identified in SD sample. The major components from essential oils were nerolidol (26.61%), cedrol (1.65%).
  
  
  CONCLUSIONS
  The SFE method is better than the SD method in reliability stability and reproducibility, and suitable for essential oils extraction of Dalbergia odorifera.
authors.affiliation: The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China. swflsy@163.com
authors.forename: Wei-Feng
authors.initials: WF
authors.lastname: Song
authors.forename: Mei-Jin
authors.initials: MJ
authors.lastname: Liao
authors.forename: Shu-Yuan
authors.initials: SY
authors.lastname: Luo
mesh_terms: D002245:Carbon Dioxide; D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D035782:Dalbergia / Q000737:chemistry*; D057168:Distillation / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry; D000081223:Polycyclic Sesquiterpenes; D015203:Reproducibility of Results; D012717:Sesquiterpenes / Q000032:analysis*; D013227:Steam; D013729:Terpenes / Q000032:analysis
chemical_list: D004365:Drugs, Chinese Herbal; D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D013227:Steam; D013729:Terpenes; D002245:Carbon Dioxide; C078669:cedrol; C037055:nerolidol