The membrane degumming process of Juglans sigillata lans sigiUata oil were studied. Plackett -Burman experiment and oil and its influence on quality of Jug- 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...