The protein fraction of milk contains different two main groups of proteins, caseins and whey proteins. Peptides are relatively small sequences of amino acids and in this case whey peptides are these small proteins that are found in the fraction that is dissolved in the serum after the precipitation of caseins. Whey proteins are proteins of high nutritional quality, they resist heartburn quickly passing to the intestine and producing a relatively rapid increase in the concentration of amino acids available in the blood.
Peptides are also released during digestion or hydrolysis of proteins, in fact most of the proteins are absorbed in the form of peptides and not as free amino acids. When the size of the peptides is more than three amino acids they are hydrolyzed by the enzymes of the intestinal brush border, while the small peptides, di peptides and tri peptides can be absorbed and reach the … Read More