FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (10): 142-145.doi: 10.7506/spkx1002-6630-201010028

• Processing Technology • Previous Articles     Next Articles

Optimization of Supercritical CO2 Extraction and Analysis of Chemical Composition of Peony Seed Oil

DENG Rui-xue,LIU Zhen,QIN Lin-lin,WANG Li,LIU Xue-qin,LIU Pu*   

  1. School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, China
  • Received:2009-07-09 Revised:2009-12-05 Online:2010-05-15 Published:2010-12-29
  • Contact: LIU Pu


Single factor and orthogonal array design method were used to optimize the extraction of peony seed oil using supercritical carbon dioxide (SC-CO2) with respect to the effects of extraction pressure and temperature, length of extraction. Along with this, the chemical composition of the extracted peony seed oil was analyzed by GC-MS. The results showed that the optimized SC-CO2 extraction for 2.5 h at 40 ℃, 30 MPa and a CO2 flow rate of 25 kg/h resulted in a maximum oil yield of 30.7%. The total content of unsaturated fatty acids of the extracted peony seed oil was 70.81%.

Key words: peony seed oil, supercritical carbon dioxide (SC-CO2) extraction, orthogonal array design, gas chromatography- mass spectrometry (GC-MS)

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