AJCN North Carolina Research Campus
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Purchase Article
Right arrow View Shopping Cart
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 Gallaher, D. D.
Right arrow Articles by Marchello, M. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Gallaher, D. D.
Right arrow Articles by Marchello, M. J.
Agricola
Right arrow Articles by Gallaher, D. D.
Right arrow Articles by Marchello, M. J.

American Journal of Clinical Nutrition, Vol 48, 350-354, Copyright © 1988 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Bioavailability in humans of zinc from beef: intrinsic vs extrinsic labels

DD Gallaher, PE Johnson, JR Hunt, GI Lykken and MJ Marchello
Department of Food and Nutrition, North Dakota State University, Fargo 58105.

Beef is a concentrated source of zinc. However, the bioavailability of Zn from beef has not been clearly established. It is also unclear whether there is a difference in absorption between intrinsic and extrinsic Zn. To address these questions, a calf was labeled with 65ZnCl2 and the meat was used as a source of intrinsically labeled beef. Twelve subjects were given a meal containing 100 g beef labeled either intrinsically or extrinsically with 65ZnCl2. Gamma-ray emissions, as determined by whole-body counting, were used to calculate Zn absorption. Absorption values were 20.9 +/- 5.5% from the extrinsic meal and 26.4 +/- 10.6% from the intrinsic meal, a difference that was not statistically significant (p greater than 0.05). Zn absorption was thus much less than the 40% assumed in establishing the 1980 Recommended Dietary Allowance for Zn. These results also indicate that extrinsic labels of Zn are valid markers of zinc absorption in beef.


This article has been cited by other articles:


Home page
 J. Am. Coll. Nutr.Home page
P. Etcheverry, K. M. Hawthorne, L. K. Liang, S. A. Abrams, and I. J. Griffin
Effect of Beef and Soy Proteins on the Absorption of Non-Heme Iron and Inorganic Zinc in Children.
J. Am. Coll. Nutr., February 1, 2006; 25(1): 34 - 40.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
K. Yokoi, N. G. Egger, V. M. S. Ramanujam, N. W. Alcock, H. H. Dayal, J. G. Penland, and H. H. Sandstead
Association between plasma zinc concentration and zinc kinetic parameters in premenopausal women
Am J Physiol Endocrinol Metab, November 1, 2003; 285(5): E1010 - E1020.
[Abstract] [Full Text] [PDF]

Home page
 J. Nutr.Home page
J. C. King
Evaluating the Impact of Plant Biofortification on Human Nutrition
J. Nutr., March 1, 2002; 132(3): 511S - 513.
[Abstract] [Full Text] [PDF]

Home page
 J. Nutr.Home page
B. Sandström, S. Bügel, B. A. McGaw, J. Price, and M. D. Reid
A High Oat-Bran Intake Does Not Impair Zinc Absorption in Humans When Added to a Low-Fiber Animal Protein-Based Diet
J. Nutr., March 1, 2000; 130(3): 594 - 599.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1988 by The American Society for Nutrition