Chemical characterization of a caseinophosphopeptide isolated from in vivo digests of a casein diet.
The in vivo formation of phosphopeptides derived from bovine casein was proved in small intestinal chyme of minipigs after ingestion of a diet containing casein. The main phosphopeptide was identified as a fragment of alpha s1-casein (f 66-74): SerP-SerP-SerP-Glu-Glu-Ile-Val-Pro-Asn. It is discussed, that caseinophosphopeptides are likely to promote the intestinal absorption of calcium and trace elements.
Meisel
H
H
Institut für Chemie und Physik, Bundesanstalt für Milchforschung, Kiel.
Frister
H
H
D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002364:Caseins / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004044:Dietary Proteins / Q000378:metabolism*; D005766:Gastrointestinal Contents / Q000032:analysis*; D010748:Phosphopeptides / Q000302:isolation & purification*; D013552:Swine; D013556:Swine, Miniature
D000596:Amino Acids; D002364:Caseins; D004044:Dietary Proteins; D010748:Phosphopeptides