ENZYMATIC PREPARATION OF PHOSPHOLIPIDS IN AQUEOUS MEDIA

摘要

Methods of conducting phospholipase-catalyzed transesterification or hydrolysis of phospholipids present in aqueous liposomal suspensions, in the absence of detergents and organic solvents, are described. The method, which employs a water/solid particle interface, gives high conversions, particularly when the solid particle is silica gel having a small particle size and is present at a level at least four times the weight of the reacting lipid. The reaction is useful for the preparation of a variety of differently substituted phospholipids, as well as diacyl glycerols and ceramides.