JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 77 No. 7 1964-1975
© 1994 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Neville, M. C.
Right arrow Articles by Allen, J. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Neville, M. C.
Right arrow Articles by Allen, J. C.

Calcium Partitioning in Human and Bovine Milk

Margaret C. Neville 1, Ronald P. Keller 1, Clare Casey 1, and Jonathan C. Allen 2

1 Department of Physiology, University of Colorado, School of Medicine, Denver 80262
2 North Carolina State University, Raleigh 27685

The partitioning of calcium in human milk was studied experimentally and compared with the distribution of calcium among the compartments of bovine milk. Care was taken to handle the milk samples to produce minimal disturbance of the milk fat globule membranes and the CO2 content. About 15% of the milk calcium was associated with casein in human milk; the remainder was in the aqueous phase. The equilibrium between ionized calcium and calcium complexes with smaller anions was examined. Ionized calcium varied between 2.3 and 4.0 mM across individuals (mean 3.0 ± .1 mM) at 90 d of lactation. The remainder of the calcium in the aqueous phase was associated with citrate and phosphate. Changes in total calcium in human milk during lactogenesis and late lactation reflected changes in citrate and casein rather than alterations in ionized calcium.

Key Words: milk • calcium • casein • trace elements

Submitted on June 16, 1993
Accepted on November 8, 1993




This article has been cited by other articles:


Home page
 J. Biol. Chem.Home page
T. A. Reinhardt, J. D. Lippolis, G. E. Shull, and R. L. Horst
Null Mutation in the Gene Encoding Plasma Membrane Ca2+-ATPase Isoform 2 Impairs Calcium Transport into Milk
J. Biol. Chem., October 8, 2004; 279(41): 42369 - 42373.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
A. Shamay, F. Shapiro, G. Leitner, and N. Silanikove
Infusions of Casein Hydrolyzates into the Mammary Gland Disrupt Tight Junction Integrity and Induce Involution in Cows
J Dairy Sci, April 1, 2003; 86(4): 1250 - 1258.
[Abstract] [Full Text] [PDF]

Home page
 Physiol. Rev.Home page
D. B. Shennan and M. Peaker
Transport of Milk Constituents by the Mammary Gland
Physiol Rev, July 1, 2000; 80(3): 925 - 951.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Cell Physiol.Home page
T. A. Reinhardt and R. L. Horst
Ca2+-ATPases and their expression in the mammary gland of pregnant and lactating rats
Am J Physiol Cell Physiol, April 1, 1999; 276(4): C796 - C802.
[Abstract] [Full Text] [PDF]

Home page
 J. Nutr.Home page
T. Matsui, Y. Kawakita, and H. Yano
Dietary Skim Milk Powder Increases Ionized Calcium in the Small Intestine of Piglets Compared to Dietary Defatted Soybean Flour
J. Nutr., July 1, 1997; 127(7): 1357 - 1361.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1994 by the American Dairy Science Association ®.