Arachidonic Acid and/or production mannered null moruteierera arupina

摘要

PROBLEM TO BE SOLVED: To provide a method for producing an oil and fat having elevated contents of arachidonic acid and/or eisosapentaenoic acid. ;SOLUTION: A microorganism having a productivity of an ω 9-based highly unsaturated fatty acid, having a Δ5 unsaturation enzyme activity and a Δ6 unsaturation enzyme activity, deteriorated or deleted from a Δ12 unsaturation enzyme activity and having the elevated activity for producing the Δ5 unsaturation enzyme activity and/or Δ6 unsaturation enzyme activity by a mutation treatment is cultured in a culture medium containing specific unsaturated fatty acids added thereto.;COPYRIGHT: (C)1999,JPO