Milk from a variety of animal species has been
included in the diet not only for infants, but also for human
adults. Milk and other milk products mainly from dairy
cows provide a high quality source of energy, proteins
and selected micronutrients such as calcium, magnesium
and phosphorus to most human population. Cow’s milk
contains six major proteins: four caseins (alpha-s1
, alphas2
, beta and kappa) and two whey proteins. Casein proteins
make up about 80 % of proteins in milk of cows.