Heat‐stable milk powders

Many milk products are subject to high temperature heat treatments during the course of manufacture. However, when heating becomes severe, as in the cuse of sterilisation temperatures, there is an increased risk of milk coagulation, Examples of dried milks whose heat‐stable characteristics are of importance include heat‐stable skimmed milk powder which is used in the manufacture of recombined evaporated milk and also coffee whiteners. Factors that affect the heat stability of skimmed milk powder are discussed. These include milk composition as affected by seasonal change, processing factors such as the effect of preheat temperature, and the role of various additives which stabilise milk to heat treatment.