Whey protein ingredients are multifunctional ingredients providing properties such as gelation, water binding, solubility,
foaming, viscosity and emulsification for foods. Of all the functional properties, solubility is thought to be one of the
most important because good solubility is a necessity for all of the other functional properties. Protein functionality
is demonstrated through interactions between protein molecules and the solvent (water), salts (ions) and other food
components.3
One of the unique properties of whey protein is good solubility in water over a wide range of pH (from
pH 2 to 9), which is important for many beverage applications.4
One challenge for whey protein is maintaining solubility
during heat processing. Most foods are heat processed in some way, and whey proteins are susceptible to changes
during heating, such as denaturation