Immobilized Mucor miehei lipase for transesterification

A method for production of an immobilized lipase preparation adapted for interesterification of fats, which comprises contacting an aqueous solution of Mucor miehei lipase with a particulate, macroporous, phenol-formaldehyde adsorbent resin having a particle size such that more than 90% of the resin particles have a size between 100 and 1000 .mu.m, at a pH in range of 5-7 to bind said lipase to said resin to form said immobilized lipase whereby at least 75% of the lipase activity is removed from the aqueous lipase solution to form a spent aqueous solution, then separating the immobilized lipase from the spent aqueous solution and thereafter drying the separated immobilized lipase to a water content of between about 2 and 40%, the resulting preparation having an activity of at least 10 batch interesterification units (BIU) per gram dry basis, and at least 5000 lipase units (LU) per gram dry basis.