Acid Production and Curd Toughness in Milks of Different αs1-Casein Types

Abstract
Composition, acid production and curd toughness were measured in milks containing as1-casein types A, B, AB, and BC. The milks differed significantly in amount of separator slime, rate of acid production and degree of curd firmness. Type as1-casein milk gave much more separator slime, much slower acid formation and a much softer curd than the other types. Reasons for the differences are postulated.