Whey preparation obtained by cavitation and uses thereof

A process for producing a microparticulated ideal whey protein preparation comprising the steps of:

• providing an ideal whey protein preparation which is a microfiltration permeate obtained from microfiltration of a milk raw material, or a concentrated form of the microfiltration permeate,
• providing a cavitator,
• optionally preheating the ideal whey protein preparation,
• treating the optionally preheated ideal whey protein preparation with the cavitator for providing the microparticulated ideal whey protein preparation, wherein the microparticulated ideal whey protein preparation contains β-lactoglobulin polymers having a size of >200 kDa, and wherein the temperature at the output of the cavitator is in the range of about 73-93° C. and the frequency in the cavitator is in the range of about 50-60 Hz.