GLYCERIDE OIL COMPOSITION FROM FISH OIL AND PREPARATION METHOD THEREOF

摘要

Provided is a fish oil-derived glyceride oil composition, which contains a large amount of DHA and DPA in a glyceride form and is superior in digestive absorption of multivalent unsaturated fatty acids and processing characteristics including oxidative stability and water dispersibility. The fish oil-derived glyceride oil composition is prepared by the steps of: (a) subjecting refined fish oil to 1,3-position specific hydrolysis using 1,3-position specific immobilized enzymes; (b) fractionating the hydrolysates of the step (a) into a fatty acid fraction and a glyceride fraction, and then subjecting the fatty acid fraction to molecular distillation to isolate multivalent unsaturated fatty acids; (c) cooling-crystallizing the glyceride fraction of the step (b) to obtain liquid fats; (d) mixing the multivalent unsaturated fatty acid of the step (b) with the liquid fat of the step (c) in a weight ratio of 5.0-80.0: 20.0-95.0, and then subjecting the mixture to transesterification at 25-80‹C and at a stirring speed of 10-400rpm under reduced pressure of 0.001-10Torr for 1-48hours using the 1,3-position specific immobilized enzymes; and (e) removing residual unreacted materials through distillation and general purification.