METHOD OF PRODUCING BETA-CASEIN COMPOSITIONS AND RELATED PRODUCTS

摘要

The present invention pertains to a method of producing beta-casein-containing compositions and products obtainable by such methods. More particularly, the invention pertains to a method of producing beta-casein compositions using controlled microfiltration first at a temperature higher than 20 degrees C., followed by cooling of the retentate to 0-15 degrees C. and a second microfiltration of the cooled composition resulting in beta-casein containing permeate.

主权项

1. A method of producing a beta-casein-containing composition, the method comprising the steps of:
a) pre-heating a milk by adjusting it to a pre-heating temperature (Tpre) in the range of 20-60 degrees C. and with a holding time in the range of 1 minute-1 hour, thereby providing a warm milk, b) subjecting the warm milk to microfiltration (MF), thereby providing a first MF permeate and a first MF retentate, c) optionally, subjecting the first MF retentate to MF-diafiltration, d) adjusting the temperature of a first composition derived from the first MF retentate to a cold temperature (Tcold) in the range of 0-15 degrees C. and keeping the temperature of the first composition within that range for a duration (tcold) of at least 0.5 hour, thereby obtaining a cooled first composition, e) subjecting the cooled first composition to MF, thereby obtaining a second retentate and a second permeate, which second permeate is enriched with respect to beta-casein, and f) optionally, subjecting the second MF retentate to MF-diafiltration, g) optionally, subjecting a second composition derived from the second permeate to one or more further processing steps, e.g. further purification and/or concentration steps, thereby providing the beta-casein-containing composition.