title: [Study on Chemical Constituents of Fat-soluble Extraction from Lepidium meyenii].
abstract: OBJECTIVE
  To study the chemical constituents of the fat-soluble extraction from Lepidium meyenii root.
  
  
  METHODS
  Different extraction methods were studied, including supercritical carbon dioxide extraction, circumfluence extraction and steam distillation. Chemical constituents of the fat-soluble extraction from Lepidium meyenii were analyzed by GC/MS.
  
  
  RESULTS
  The number of compounds isolated by the above four methods were 38, 31, 14, 21 (specific gravity less than 1 in steam distillation) , and 25 (specific gravity greater than 1 in steam distillation), accounting for 85.79%, 81.18%, 62.08%, 98.36% (specific gravity less than 1 in steam distillation) and 81.54% (specific gravity greater than 1 in steam distillation) of each total peak area, respectively.
  
  
  CONCLUSIONS
  This study lays a certain foundation for further study and development of functional factors in Lepidium meyenii root.
authors.forename: Cai-hong
authors.initials: CH
authors.lastname: Fan
authors.forename: Fa-huan
authors.initials: FH
authors.lastname: Ge
mesh_terms: D002245:Carbon Dioxide; D057168:Distillation; D008401:Gas Chromatography-Mass Spectrometry; D029686:Lepidium / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry; D064209:Phytochemicals / Q000737:chemistry* / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013227:Steam
chemical_list: D008055:Lipids; D064209:Phytochemicals; D013227:Steam; D002245:Carbon Dioxide