FIELD: chemistry.
SUBSTANCE: method of obtaining docosahexaenoic acid includes alkaline hydrolysis of marine fats, processing salts of fatty acids with iodine solution, extraction of iodine-lactones of fatty acids with non-polar organic solvent, removal of free fatty acids which did not react from mixture, opening iodine-lactones of fatty acids with silylating agent, neutralisation of released free iodine with sodium thiosulphate and extraction of free fatty acids with non-polar organic solvent at certain conditions.
EFFECT: method makes it possible to obtain end high-purity product with increased output.
5 cl, 4 dwg, 1 tbl, 6 ex
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