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Binding of Zinc to Colloidal Calcium Phosphate in Human and Cow’s Milks

  • H. Singh
  • A. Flynn
  • P. F. Fox

Abstract

The lower bioavailability of Zn in cow’s milk compared with human milk is well documented. It is generally agreed that this is due to differences in the nature and/or concentrations of Zn-binding ligands in the two milks and in the interactions of Zn with these ligands or their digestion products in the gastrointestinal tract. Lonnerdal et al. (1985) have shown that the bioavailability to rats of the Zn associated with bovine casein micelles is lower than that in human milk. However, the nature of Zn binding in casein micelles is poorly understood. The object of this study was to investigate the distribution of Zn in human and bovine milks and to examine the nature of Zn binding in casein micelles.

Keywords

Human Milk Whey Protein Bovine Milk Casein Micelle Trace Trace 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Lonnerdal, B., Keen, C. L., Bell, J. G. and Hurley, L. S., 1985, Zinc uptake and retention from chelates and milk fractions, in: “Trace Elements in Man and Animals - TEMA 5”C. F. Mills, I. Bremner and J. K. Chesters, eds., Commonwealth Agricultural Bureau, Slough, U.K.Google Scholar
  2. McGann, T.C.A., Bucheim, W., Kearney, R.D. and Richardson, T., 1983. Composition and ultrastructure of calcium phosphate-citrate complexes in bovine milk systems, Biochim.Biophs. Acta, 760:415.CrossRefGoogle Scholar
  3. Parkash, S. and Jenness, R., 1967, Status of zinc in cow’s milk, J. Dairy Sci., 50:127.CrossRefGoogle Scholar
  4. Pyne, G.T. and McGann, T.C.A., 1960, The colloidal phosphate of milk II. Influence of citrate, J.Dairy Res., 29:101.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • H. Singh
    • 1
  • A. Flynn
    • 2
  • P. F. Fox
    • 1
  1. 1.Departments of Food ChemistryUniversity CollegeCorkIreland
  2. 2.Departments of NutritionUniversity CollegeCorkIreland

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