PROCESS FOR PRODUCING LACTOSE-FREE DAIRY PRODUCTS (II)

摘要

A process for producing dairy products with a defined lactose content is suggested, comprising the following steps: (a) ultrafiltration of a starting milk for producing a first permeate P1 and a first retentate R1; (b) nanofiltration of the first permeate P1 for producing a second permate P2 and a second retentate R2; (c) hydrolysis of the second retentate R2 while adding lactase; and (d) mixing the first retentate R1 with such an amount of the second permeate P2 and the hydrolysis product of step (c) each that a standardized dairy product is obtained, the content of proteins and minerals of which corresponds to the one of the starting milk.