This report summarizes recent research on improving the heat stability of whey protein ingredients, thus helping product
developers utilize them in more applications. Whey, by definition from the Code of Federal Regulations, is the liquid substance
obtained by separating the coagulum from milk or cream in cheese making. Whey proteins represent about 20 percent of
the milk proteins, which remain in the serum phase during the process of making cheese and are later processed into many
different ingredients. The primary whey proteins are beta-lactoglobulin (β-lg), alpha-lactalbumin (α-lac), bovine serum albumin,
immunoglobulins and proteose peptones.