Casein is the main protein in the milk of mammals including cows, sheep and humans. The protein of milk is mainly Casein, and human milk is mainly albumin. Casein is a large, hard, dense curds that are extremely difficult to digest and break down.
Casein is the highest content of protein in milk, caries, prevent osteoporosis and rickets, promote animal in vitro fertilization, regulate blood pressure, treat iron deficiency anemia, magnesium deficiency neuritis and other physiological effects. In particular, its functional characteristics of promoting the efficient absorption of major elements (Ca, Mg) and trace elements (Fe, Zn, Cu, Cr, Ni, Co, Mn, Se) make it a "mineral carrier" reputation, and it can combine with metal ions, especially calcium ions to form soluble complexes. On the one hand, calcium can effectively avoid the formation of precipitation in the neutral or slightly alkaline environment of the small intestine, and on the other hand, calcium can be absorbed by intestinal wall cells without VD participation.
Casein is an amorphous, non-moisture absorbing substance, soluble in water at room temperature 0.8-1.2%, slightly soluble in 25ºC water and organic solvents, soluble in dilute alkali and concentrated acid, can absorb water, when immersed in water, it expands rapidly, but the molecules do not combine.
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