METHOD OF PRODUCING OIL/FAT COMPRISING HIGHLY-UNSATURATED FATTY ACIDS BY MEANS OF LIPASE

摘要

[Problem] To provide a relatively low-cholesterol oil/fat comprising highly-unsaturated fatty acids. [Solution] A method of producing glycerides that comprise highly-unsaturated fatty acids and have a sterol content of 0.3 wt% or less and a highly-unsaturated fatty acid content of 40 area% or more, said method being characterized by a process for concentrating highly-unsaturated fatty acids in which prior to performing a lipase reaction, free sterols are removed from a starting material oil that includes glycerides comprising highly-unsaturated fatty acids, and then the highly-unsaturated fatty acids within the glyceride comprising highly-unsaturated fatty acids are concentrated by the action of a lipase that exhibits little interaction with highly-unsaturated fatty acids.