Abstract:Idesia oil is a very nutritious edible oil，because there is a lot of phospholipid peptized colloids in it，it is easy to cause it to deteriorate，blacken and bitter at high temperature，which reduces its quality.A kind of soft degumming process which was consisted of ethylene diamine tetraacetic acid （EDTA）as chelating agent，sodium dodecyl sulfate（SDS）as emulsifier and sodium carbonate as auxiliary agent was used to remove colloids in idesia oil.The effects of volume ratio of chelating degumming agents，degumming temperature，degumming time and centrifugal separation time on degumming for idesia oil were systematically investigated.The optimal degumming process was that the volume ratio of chelating degumming agents was 2 ∶3 ∶3，degumming temperature was 35 ℃，degumming time was 10 min，and centrifugal separation time was 30 min.Under the optimal process conditions，the degumming rate of idesia oil reached 96.93 %.In addition，the established analytical method could effectively determine the content of phospholipids in idesia oil.Compared with traditional degumming process，the degumming rate was greatly improved.Moreover，the color of the treated idesia oil was also more transparent.