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Studies on Techniques of Extracting and Refining Egg Yolk Lecithin

ZENG Han-ting,WANG Jun,CHEN Ming-li,CHEN Jin-guo(Farm Products Processing Subcenter of Hubei Agricultural Science&Technology Innovation Center/Institute of Farm Products Processing and Nuclear-agricultural Technology,Hubei Academy of Agricultural Sciences,Wuhan 430064,China)  
The discarding process of egg yolk oil from egg yolk powder was studied by using superitical fluid CO2 extraction.Extracting the lecithin with alcohol from residue egg yolk powder and refining,the refined lecithin was gotten.Through de-terming,it contented:1.phosphtidylcholine 91.8 g/100g;2.protein 8.69 g/100g;3.in acetone material insoluble 90.4 g/100g.
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