Patent ID: 7759095

Claim:
A process for the preparation of phosphatidylserine of formula wherein R 1 and R 2 independently represent a saturated, mono-unsaturated or polyunsaturated acyl C 10 -C 30 , X=OH or OM where M=alkaline or alkaline earth metal, ammonium, alkylammonium (including the inner salt) including the transphosphatidylation reaction between a compound of the general formula wherein R 1 and R 2 and X have the above specified meanings, R 3 =CH 2 —CH 2 —NH 2 or CH 2 —CH 2 —N + (CH 3 ) 3 and Serine in D, L or racemic form catalysed by the phospholipase D enzyme (PLD), characterised in that said reaction is carried out in a hydroalcoholic medium containing an aliphatic alcohol and in the presence of bivalent metal oxide.