Patent ID: 6812020
Filing Date: 2004-11-02
Classification: C12P

Abstract:
An isolated microorganism produced by the process ofmutating a microorganism at least once, which microorganism produces arachidonic acid and belongs to the genus Mortierella and a species selected from the group consisting of Mortierella elongata, Mortierella exiqua, Mortierella hygrophila and Mortierella alpina, wherein said mutated microorganism has decreased or lost &Dgr;12 desaturation activity, has at least one of &Dgr;5 desaturation activity, &Dgr;6 desaturation activity or chain length elongation activity elevated in comparison with said corresponding activity of the microorganism which is subject to mutation, and produces at least about 27% more mead acid compared to the microorganism which is subject to mutation.