title: [Supercritical CO2 extraction and component analysis of Aesculus wilsonii seed oil].
abstract: OBJECTIVE
  To research the optimal extraction process of supercritical CO2 extraction and analyze the component of the oil extracted from Aesculus wilsonii seed.
  
  
  METHODS
  Using the yield of Aesculus wilsonii seed oil as the index, optimized supercritical CO2 extraction parameter by orthogonal experiment methodology and analysed the compounds of Aesculus wilsonii seed oil by GC-MS.
  
  
  RESULTS
  The optimal parameters of the supercritical CO2 extraction of the oil extracted from Aesculus wilsoniit seed were determined: the extraction pressure was 28 MPa and the temperature was 38 degrees C, the separation I pressure was 12 MPa and the temperature was 40 degrees C, the separation II pressure was 5 MPa and the temperature was 40 degrees C, the extraction time was 110 min. The average extraction rate of Aesculus wilsonii seed oil was 1.264%. 26 kinds of compounds were identified by GC-MS in Aesculus wilsonii seed oil extracted by supercritical CO2. The main components were fatty acids.
  
  
  CONCLUSIONS
  Comparing with the petroleum ether extraction, the supercritical CO2 extraction has higher extraction rate, shorter extraction time, more clarity oil. The kinds of fatty acids with high amounts in Aesculus wilsonii seed oil is identical in general, the kinds of fatty acids with low amounts in Aesculus wilsonii seed oil have differences.
authors.affiliation: Sun Yat-Sen University, Guangzhou 510275, China.
authors.forename: Guang-Yu
authors.initials: GY
authors.lastname: Chen
authors.forename: Zhao-Hua
authors.initials: ZH
authors.lastname: Shi
authors.forename: Hai-Chi
authors.initials: HC
authors.lastname: Li
authors.forename: Fa-Huan
authors.initials: FH
authors.lastname: Ge
authors.forename: Hua-Shu
authors.initials: HS
authors.lastname: Zhan
mesh_terms: D031319:Aesculus / Q000737:chemistry*; D002245:Carbon Dioxide; D025924:Chromatography, Supercritical Fluid; D004987:Ethers / Q000737:chemistry; D005227:Fatty Acids / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D010938:Plant Oils / Q000737:chemistry / Q000302:isolation & purification*; D011312:Pressure; D012639:Seeds / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013696:Temperature
chemical_list: D004987:Ethers; D005227:Fatty Acids; D010938:Plant Oils; D012997:Solvents; D002245:Carbon Dioxide