Caseinophosphopeptides (CPPs) have been shown to possess the unique property of binding macro elements such as Ca, Mg and Fe along with trace elements such as Zn, Ba, Cr, Ni, Co and Se. Milk and dairy products are excellent sources of Ca~(2+). CPPs produced during the digestion of caseins are known to enhance the bio-availability of Ca~(2+) in the diet, specifically by increasing the solubility of Ca~(2+) in the alkaline environment of the small intestine where maximal passive absorption of dietary Ca~(2+) is thought to take place. Casein derived phosphorylated peptides are reported to enhance vitamin D independent bone calcification in rachitic infants.
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