METHOD FOR SEPARATION OF 1,3-DISATURATED-2-UNSATURATED TRIGLYCERIDE

摘要

Disclosed is a process for producing a triglyceride rich in an XOX-type oil-and-fat and/or an XLX-type oil-and-fat, which comprises the steps of: melting a triglyceride component that contains a triglyceride having a saturated fatty acid residue at position-1 and position-3 and an oleoyl group and/or a linoloyl group at position-2 (an XOX-type oil-and-fat and/or an XLX-type oil-and-fat) in an amount of 20 to 60 mass% relative to the total amount of the triglyceride component, by heating in the presence of 1 to 30 mass% of a fatty acid lower alkyl ester; cooling the resulting solution to cause the precipitation of a crystal; and separating the resulting solution into a solid fraction and a liquid fraction. The process is a more efficient and industrially more suitable separation/production process for an oil-and-fat rich in a triglyceride that has a saturated fatty acid residue at position-1 and position-3 and an oleoyl group and/or a linoloyl group at position-2 (an XOX-type oil-and-fat and/or an XLX-type oil-and-fat).