HIGHLY UNSATURATED FATTY ACID OR HIGHLY UNSATURATED FATTY ACID ETHYL ESTER WITH REDUCED ENVIRONMENTAL POLLUTANTS, AND METHOD FOR PRODUCING SAME

摘要

Among the dioxins contained as polyunsaturated fatty acids or ethyl esters of polyunsaturated fatty acids, which are produced using oil and fat containing polyunsaturated fatty acids as constituent fatty acids as raw material oil, and the content of environmental pollutants has been reduced, polychlorinated dibenzoparadioxins (PCDD) and polychlorinated dibenzofuran (PCDF) content of less than 0.05 pg-TEQ/g and coplanar PCB (Co-PCB) of less than 0.03 pg-TEQ/g, polyunsaturated fatty acid or ethyl ester of polyunsaturated fatty acid and a method for producing the same, wherein free fatty acids and environmental pollutants are removed from the raw oil by thin film distillation, and the obtained fat or oil is ethyl esterified and purified by rectification and column chromatography.