| Calcium bioavailability and iron-calcium interaction in orange juice. | |
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MedLine Citation:
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PMID: 2926077 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We have determined the effects of orange juice on calcium bioavailability from CCM (a combination of CaCO3, citric acid, malic acid, 5:1:1, mol/mol/mol) and iron-calcium interaction by using whole body isotope retention techniques in rats. The mean calcium retention values from CCM were 42.8% from orange juice and 33.0% from water, a control. Orange juice significantly (p less than 0.05) improved calcium bioavailability. This enhancement of calcium absorption is independent of orange juice's pH and citric acid. Iron absorption from orange juice with CCM (36.7%) was also significantly higher than that from control (water) plus CCM (12.3%). Ascorbic acid at levels naturally present in orange juice failed to improve iron retention (12.3% vs 12.5%) from water plus CCM. In contrast, citric acid (at orange juice level) significantly (p less than 0.05) promoted iron absorption in the presence of CCM (8.0% vs 23.7%). The benefit of citric acid on iron-calcium interaction is enhanced by ascorbic acid. In the presence of both citric acid and ascorbic acid, at orange juice levels, iron absorption from water plus CCM (37.6%) was comparable to that from water without CCM (34.5%). These results show orange juice can deliver bioavailable calcium from CCM with minimal inhibition of iron absorption. Citric acid and ascorbic acid are likely the major orange juice components that contribute to the alleviation of iron absorption inhibition by CCM. |
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Authors:
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H Mehansho; R L Kanerva; G R Hudepohl; K T Smith |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American College of Nutrition Volume: 8 ISSN: 0731-5724 ISO Abbreviation: J Am Coll Nutr Publication Date: 1989 Feb |
Date Detail:
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Created Date: 1989-05-08 Completed Date: 1989-05-08 Revised Date: 2008-06-23 |
Medline Journal Info:
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Nlm Unique ID: 8215879 Medline TA: J Am Coll Nutr Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 61-8 Citation Subset: IM |
Affiliation:
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Procter and Gamble Company, Miami Valley Laboratories, Cincinnati, Ohio 45239-8707. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Absorption Animals Beverages* Biological Availability Calcium / metabolism* Citrus* Hydrogen-Ion Concentration Iron / metabolism* Male Rats Rats, Inbred Strains |
| Chemical | |
Reg. No./Substance:
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7439-89-6/Iron; 7440-70-2/Calcium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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