Valio Ltd.

Saara Lähtevänoja

Harri Kallioinen

The present invention relates to a method of inactivation of plasmin enzyme in a milk-based product, wherein casein and whey protein are separated from a milk raw material by microfiltration to provide a casein concentrate as a microfiltration retentate having a whey protein content of less than 20 wt. %, based on the total protein content of the concentrate, and a whey protein concentrate as a microfiltration permeate; the casein concentrate is subjected to a thermal treatment at a temperature in the range of about 72&#xb0; C. to about 95&#xb0; C. to provide a thermally treated casein concentrate; and a milk-based product with a reduced plasmin activity comprising the thermally treated casein concentrate is provided. The milk-based products prepared by the method retain flawless organoleptic properties at different storage temperatures even under prolonged storage periods.

Method for producing a milk-based product with reduced plasmin-activity

The invention relates to a method for producing a milk-based product, comprising the steps of: providing a milk raw material; altering a ratio of casein to total protein of the milk raw material to less than about 0.80; subjecting the milk raw material with the altered ratio of casein to total protein from step b) to a heat treatment at the temperature of at least about 150&#xb0; C. for a period of at most about 0.3 sec; cooling the heat-treated milk raw material from step c) to provide the milk-based product. The method provides milk-based products with long shelf life and good organoleptic properties.

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Tolkkinen, Finland

Saara Lähtevänoja