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Joy, Edward J.M.; Broadley, Martin R.; Young, Scott D.; Black, Colin R.; Chilimba, Allan D.C.; Ander, E. Louise; Barlow, Thomas S.; Watts, Michael J. (2015)
Publisher: Elsevier
Journal: Science of The Total Environment
Languages: English
Types: Unknown
Subjects: Waste Management and Disposal, Environmental Engineering, Pollution, Environmental Chemistry

Classified by OpenAIRE into

mesheuropmc: food and beverages
Food supply and composition data can be combined to estimate micronutrient intakes and deficiency risks among populations. These estimates can be improved by using local crop composition data that can capture environmental influences including soil type. This study aimed to provide spatially resolved crop composition data for Malawi, where information is currently limited.\ud Six hundred and fifty-two plant samples, representing 97 edible food items, were sampled from N150 sites in Malawi between 2011 and 2013. Samples were analysed by ICP-MS for up to 58 elements, including the essential minerals calcium (Ca), copper (Cu), iron (Fe), magnesium (Mg), selenium (Se) and zinc (Zn).\ud Maize grain Ca, Cu, Fe, Mg, Se and Zn concentrations were greater from plants grown on calcareous soils than those from the more widespread low-pH soils. Leafy vegetables from calcareous soils had elevated leaf Ca, Cu, Fe and Se concentrations, but lower Zn concentrations. Several foods were found to accumulate high levels of Se, including the leaves of Moringa, a crop not previously been reported in East African food composition data sets.\ud New estimates of national dietary mineral supplies were obtained for non-calcareous and calcareous soils. High risks of Ca (100%), Se (100%) and Zn (57%) dietary deficiencies are likely on non-calcareous soils. Deficiency risks on calcareous soils are high for Ca (97%), but lower for Se (34%) and Zn (31%). Risks of Cu, Fe and Mg deficiencies appear to be low on the basis of dietary supply levels.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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    • Cakmak I, Kalayci M, Kaya Y, Torun AA, Aydin N, Wang Y, et al. Biofortification and localization of zinc in wheat Grain. J Agric Food Chem 2010;58:9092-102.
    • Chilimba ADC, Young SD, Black CR, Rogerson KB, Ander EL, Watts MJ, et al. Maize grain and soil surveys reveal suboptimal dietary selenium intake is widespread in Malawi. Sci Rep 2011;1:1-9. http://dx.doi.org/10.1038/srep00072.
    • Chilimba ADC, Young SD, Black CR, Meacham MC, Lammel J, Broadley MR. Agronomic biofortification of maize with selenium (Se) in Malawi. Field Crop Res 2012;125: 118-28.
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    • Siyame EWP, Hurst R, Wawer AA, Young SD, Broadley MR, Chilimba ADC, et al. A high prevalence of zinc- but not iron-deficiency among women in rural Malawi: a crosssectional study. Int J Vitam Nutr Res 2013;83:176-87.
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    • White PJ, Broadley MR. Biofortification of crops with seven mineral elements often lacking in human diets - iron, zinc, copper, calcium, magnesium, selenium and iodine. New Phytol 2009;182:49-84.
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    • Zimmermann MB. Methods to assess iron and iodine status. Br J Nutr 2008;99:S2-9.
  • Inferred research data

    The results below are discovered through our pilot algorithms. Let us know how we are doing!

    Title Trust
    73
    73%
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