To provide a method for preparation of new CLAs that can freely select the rate of cis9-trans11/trans10-cis12.
Organic materials, comprising a mixture of at least two products (1) and (II), both containing isomers of conjugated long chain polyunsaturated fatty acids moieties (L1) and (L2) can be obtained by subjecting an organic material, selected from free fatty acids, mono-, di- or triglycerides, phospholipid, alkyl ester or wax-esters, containing at least 5 wt.% of these conjugated polyunsaturated fatty acids, to an enzymic conversion (acidolysis, alcoholysis, esterification, hydrolysis) using an enzyme that can be discriminated between (L1) and (L2), so that original ratio L1/L2=XA in starting material is increased to XB wherein XB≥1.1XA.
MOORE STEPHEN RAYMOND
MCNEIL GERALD PATRICK
ZWEMMER OLGA
