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Biotechnologically-modified Carrots: Calcium Absorption Relative to Milk

Author(s): Keli M. Hawthorne | Jay Morris | Tim Hotze | Kendal D. Hirschi | Steven A. Abrams

Journal: Journal of Bioequivalence & Bioavailability
ISSN 0975-0851

Volume: 01;
Issue: 01;
Start page: 034;
Date: 2009;
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Keywords: calcium | absorption | bioavailability | biotechnology | stable isotope | carrot

Background: Biotechnology to increase the nutrient content of fruits and vegetables is an innovative strategy to address insufficient mineral intakes. A novel biotechnologically modified carrot which has higher levels of calcium than control carrots has been developed.Objective: For dietary guidance, it is necessary to understand the relative servings of any specific product that would be needed to provide calcium compared to a standard source, such as milk.Methods: In a crossover study we used stable isotopes to measure calcium absorption from milk in 30 young adults and compared it to calcium absorption from both biotechnologically modified (MOD) and control (CON) carrots.Results: Using a total meal calcium of 300 mg of which 35-40 mg of the calcium is derived from the test product, fractional calcium absorption from milk was slightly higher than from the MOD carrot (50.1 ± 3.0% vs. 42.6 ± 2.8%, Mean ± SEM, p
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