Question

in which form does milk protein casein chaged

Answer 1

as casien is a protein after digestion it gets concerted into aminoacids

Answer 2

In cow's milk, approximately 82% of milk protein is casein and the remaining 18% is serum, or whey protein. The casein family of protein consists of several types of caseins (α-s1, α-s2 , ß, and 6) and each has its own amino acid composition, genetic variations, and functional properties.