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|1. (WO2017191821) METHOD FOR PRODUCING HIGHLY UNSATURATED FATTY ACID-CONTAINING COMPOSITION|
|Applicants:||NISSHIN PHARMA INC.
|Title:||METHOD FOR PRODUCING HIGHLY UNSATURATED FATTY ACID-CONTAINING COMPOSITION|
Provided is a method for producing a highly unsaturated fatty acid while suppressing the degradation of a silver salt solution. A method for producing a composition that contains a highly unsaturated fatty acid, wherein the method comprises: charging a silver-salt-containing aqueous solution into a reactor and causing contact to occur with a raw material solution containing an alkyl ester of a highly unsaturated fatty acid; and recovering from the reactor the aqueous solution containing the silver salt that has been brought into contact with the raw material solution. The charging of the aqueous solution containing a silver salt into the reactor and the recovering from the reactor are conducted in parallel.