Casein phosphopeptide CPP promotes calcium absorption
Casein phosphopeptide is a kind of food nutrition fortifier produced by enzymatic hydrolysis with milk or casein products as raw materials.
The active polypeptide isolated from milk casein can bind calcium ions to avoid precipitation and promote absorption of calcium ions in the intestinal tract due to its specific structure.
Vitamin D is the most important biological factor of calcium metabolism, which mainly promotes the absorption of calcium and phosphorus in the small intestine by regulating and maintaining the normal value of calcium and phosphorus in serum. As a result, international authorities require babies to take 400IU of vitamin D every day after the first two weeks of life.
So how does casein phosphopeptide CPP promote calcium absorption?
Phytic acid oxalic acid, which is contained in plant foods such as cereals and vegetables, is easily combined with calcium to form calcium phosphate precipitate in the weak alkaline environment of the small intestine, affecting the absorption of calcium. CPP can bind to calcium in the small intestine, thus inhibiting calcium phosphate precipitation and keeping dissolved calcium at a relatively high concentration, thus improving the absorption rate of calcium in the small intestine.