Journal
FOOD CHEMISTRY
Volume 126, Issue 4, Pages 1800-1807Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2010.12.087
Keywords
Processing; Maize; Iron; Bioaccessibility; Phytate; Benin
Funding
- European Union [Fp7/2007-2013, 211484]
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The effect of the different unit operations of processing traditionally used to produce four maize foods commonly consumed in Africa on the nutritional composition of the products was investigated, using Benin as a study context. The impact of the processes on lipid, fibre, phytate, iron and zinc contents varied with the process. The lowest IP6/Fe and IP6/Zn molar ratios, the indices used to assess Fe and Zn bioavailability were obtained in mawe, a fermented dough. Analysis of maize products highlighted a significant increase in iron content after milling, as a result of contamination by the equipment used. Evaluation of iron bioaccessibility by in vitro enzymatic digestion followed by dialysis revealed that the iron contamination, followed by lactic acid fermentation, led to a considerable increase in bioaccessible iron content. Extrinsic iron supplied to food products by the milling equipment could play a role in iron intake in developing countries. (C) 2010 Elsevier Ltd. All rights reserved.
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