FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (22 ): 112-115.doi: 10.7506/spkx1002-6300-200922023

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Supercritical Carbon Dioxide Extraction of Oil from Silkworm Pupa

WANG Jing1,HAO Xiao-song2,SUN Lin-tao2,DAI Li-na1,CHEN Kai-xun2,GAO Gui-tian1,*   

  1. (1. College of Food Engineering and Nutritional Science, Shannxi Normal University, Xi'an 710062, China;
    2. College of Chemical Engineering, Northwest University, Xi'an 710069, China)
  • Received:2009-07-06 Online:2009-11-15 Published:2010-12-29
  • Contact: GAO Gui-tian1,* E-mail:gaoguitian2006@snnu.edu.cn

Abstract:

The technical parameters in supercritical fluid extraction of silkworm pupa oil were optimized by conducting an orthogonal L9(3)4 test. Effects of operating conditions on the extraction yield were investigated, including extraction temperature, pressure, CO2 flow rate and pressure of the first separation. The optimum conditions for supercritical fluid extraction were as follows: extraction temperature 40 ℃, pressure 30 MPa, CO2 flow rate 25 kg/h and pressure of the first separation 9 MPa. Under such conditions, the extraction yield of silkworm pupa oil reached 30.53%. The extraction yield was mainly influenced by pressure. In the following, the composition of fatty acid and the physical and chemical characteristics of silkworm pupa oil were determined.

Key words: supercritical carbon dioxide, silkworm pupa oil, extraction

CLC Number: