Action of Heat on Cow κ-Casein. Heat Caseino-Glycopeptide

Abstract
The 3 main casein fractions ([alpha]5, [beta], [kappa]) of cow milk were attacked during heating, under conditions closely related to sterilization, but the process was probably different in each case. For n-casein, the actions of rennin and of heat (120 C- 20 min.) seem to be similar. A heat caseino-glycopeptide was isolated and it had nearly the same amino acid composition as the rennin caseino-glycopeptide. These data again suggest the existence of a very labile linkage in k-casein which is easily split by different procedures.