METHOD OF SYNTHESIZING LACTULOSE AND SYSTEM FOR SYNTHESIZING LACTULOSE

摘要

PURPOSE: A method for producing lactulose is provided to improve economic efficiency of a process, to recycle resources by utilizing a lactose-containing waste liquid, and to produce prebiotics. CONSTITUTION: A method for producing lactulose comprises the steps of: immobilizing beta-galactosidase on a carrier; filling the immobilized carrier in a packed bed reactor; and injecting a substrate containing whey and fructose to the packed bed reactor and inducing a reaction. A system for producing lactulose comprises: the packed bed reactor (11) filled with carrier-immobilized beta-galactosidase; a substrate injection unit for injecting the substrate containing whey and fructose into the packed bed reactor; and a temperature control unit which controls reaction temperature of the packed bed reactor.