Patent ID: 6127562
Filing Date: 2000-10-03
Classification: C12P

Abstract:
Process for the enrichment of a polyunsaturated fatty acid (=PUFA) mixture, comprising different isomers with at least two conjugated unsaturations, including isomers from which one unsaturation is a trans-10 double bond, in polyunsaturated isomers having a trans-10 double bond, wherein a PUFA-mix comprising at least 5 wt % of trans-10 isomer, is subjected to an enzymatic conversion with a mono- di- or higher alcohol using an enzyme that can discriminate trans-10 isomers from other cis and/or trans isomers also present in the PUFA-mix, and separating the mixture obtained after the conversion into unconverted PUFA-acids and esters or glycerides from the PUFA-acids by physical or chemical means and isolating an ester or glyceride mix from PUFA's that is enriched in the trans-10 PUFA-isomers with at least 10% compared to the starting mixture.