SHORT COMMUNICATIONS: Association of casein haplotypes with casein composition and size of Micelles in malks from Simmental×Red Holstein cows

摘要

The casein micelles of bovine milk are large aggregates of roughly spherical shape consisting of the four phosphoproteins α_s1-, α_s1-, αs2-, β- and k-casein (CN). They are polydisperse colloidal particles with weight-average diameters between about 50 and 500 nm (orne, 1984). Since αs1-, αs2- ad β-CN are sensitive to calcium it is assumed that they are located predominantly within the micelle, whereas k-CN is mainly on the surface of the micelles and serves as a stabilizer for the aggregates owing to its hydrophilic C-terminus.