Phosphorylated casein peptide (Casein phosphopeptides, CPP) is the most studied a mineral binding peptides, CPP ... made good amino acid composition, rich in a variety of biologically active peptides function, the scientific method qualitative and quantitative analysis, confirmed peptide content and small molecular weight and good absorption and utilization; compliance with various livestock and aquatic animal growth. Phosphorylated casein peptides - is a way to help calcium absorption enhancer. Easy combination of calcium and phosphate in the body to form the body can not absorb calcium phosphate utilization, and excreted, while casein phosphorylated peptides can be the first to combine with calcium in the intestines, the formation of soluble calcium and inhibit calcium salt formation, effectively improve the solubility of the cover, enhance absorption and utilization of calcium.
Casein (Casein, derived from the Latin caseus, Italian cheese. Chinese or called casein), containing phosphate, belong phosphoprotein (αS1, αS2, β, κ Casein is the main component of mammalian milk, the milk content of 80%, accounted for 20% of human milk - 45%.
Casein contains a large amount of proline, proline these organisms generally do not participate in the chemical reaction. Casein nor a disulfide bond, so it is no obvious secondary structure. Tyrosine was slightly hydrophobic, is coated in milk called casein micelles in the bag. It forms micelles with the active interface is not the same, because of their hydrophobic outer end, and they are rounded; the difference is greater, which is highly hydrophilic micelle interior. Glue Casein bundle by calcium ions bound to the hydrophobic effect. The isoelectric point of casein is 4.6, and the pH value of the milk is 6.6, so the apparent casein in milk negatively charged. The purified casein in water or a neutral salt solution are not soluble, but soluble in dilute alkaline solution, and sodium acetate are dissolved in a solution of sodium of grass.
Trypsin hydrolysis of peptides containing phosphate may be added to the casein solution to generate an organic adhesive (glue The widespread application of casein, in addition to the main material is cheese, but also can be used as food additives, paints, wood glue, plastic fiber, nutritional supplements or dentist material. It provides amino acids, carbohydrates, calcium and phosphorus needed by the body.