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Membrane degumming of Juglans sigillata oil
  
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KeyWord:Juglans sigillata oil  membrane degumming  Plackett-Burman experiment  response surface methodology  vitamin E  phytosterol
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LIU Jiawei，GENG Pengfei, HU Chuanrong  
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Abstract:
      The membrane degumming process of Juglans sigillata oil and its influence on quality of Juglans sigillata oil were studied. Plackett-Burman experiment and response surface methodology were used to optimize the membrane degumming process of Juglans sigillata oil. The results showed that the optimal membrane degumming conditions were obtained as follows: membrane pore size 10 kDa, ratio of solvent to oil 3∶?1 and operation pressure 0.25 MPa. Under the optimal conditions, the content of phospholipids in Juglans sigillata oil decreased from 755.603 mg/kg to 16.25 mg/kg, and the degumming rate was 97.85%. Compared with water degumming,the contents of VE and phytosterols in Juglans sigillata oil after membrane degumming were higher and the oxidation induction time was longer.
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