Hydrolysis of lactose in milk by lactase immobilized to a non-porous magnetic support

Abstract

Listen

Translate article

1. Lactases immobilized to sub-micron ferrite particles hydrolyse lactose in whole milk, from which they are easily recovered magnetically. 2. Neither type of lactase available on a large scale has ideal properties for use in an immobilized derivative. Fungal lactase has low activity at the pH of milk, while the yeast enzyme is inactivated by a component of milk. 3. The non-porous magnetic catalyst is only weakly fouled in whole milk, and foul is readily removed by agitation in buffer or detergent solution.