Free Access
Reprod. Nutr. Dev.
Volume 44, Number 5, September-October 2004
Page(s) 493 - 498
Reprod. Nutr. Dev. 44 (2004) 493-498
DOI: 10.1051/rnd:2004053

Biopeptides of milk: caseinophosphopeptides and mineral bioavailability

Saïd Bouhallaba and Dominique Bougléb

a  Science et Technologie du lait et de l'oeuf, UMR 1053 INRA-Agrocampus, 65 rue de Saint Brieuc, 35042 Rennes Cedex, France
b  Laboratoire de physiologie digestive et nutritionnelle, CHU de Caen, Côte de nacre, 14033 Caen Cedex, France

Abstract - The biological and physiological activities of milk proteins are partially attributed to several peptides encrypted in the protein molecules. These peptides can be liberated by enzymatic digestion in vitro and in vivo. Among the biologically active molecules, phosphorylated peptides (caseinophosphopeptides, CPP) are known to exert an effect on calcium metabolism but also on other minerals. While the existing discrepancy on the potential role of CPP on calcium availability has not been clarified, the results of our previous studies showed that a purified phosphopeptide (b(1-25)) exhibits a positive effect on iron bioavailability in vivo. Here we report the main results on the efficiency of b(1-25) in the absorption and availability of iron as well as on the mechanism involved.

Key words: milk / bioactive peptide / phosphopeptide / iron bioavailability

Corresponding author: Saïd Bouhallab

© INRA, EDP Sciences 2004