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Impact of biofortified maize consumption on serum carotenoid concentrations in Zambian children

Abstract

Biofortified maize, designed as an intervention strategy to prevent vitamin A deficiency, can provide upwards of 15 μg β-carotene per g dry weight. Some varieties also have elevated concentrations of other carotenoids. We conducted a cluster randomized, controlled feeding trial in rural Zambia to test the impact of daily consumption of biofortified maize over a 6-month period on vitamin A status. Serum concentrations of retinol and carotenoids were assessed by high-performance liquid chromatography. Data on circulating carotenoids by intervention group in 679 children are reported here. As previously shown, consumption of this β-carotene-rich maize significantly improved serum β-carotene concentrations (0.273 vs. 0.147 μmol/L, p < 0.001, in this subset of children). Here we show significant increases in α-carotene, β-cryptoxanthin, and zeaxanthin (p < 0.001). There was no impact on lutein or lycopene concentrations. Consumption of biofortified maize can have broader implications beyond the control of vitamin A deficiency (Trial registration: NCT01695148).

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Acknowledgements

We thank the Mkushi District Management Team, Fabiana Moura, and Erick Boy for their support and acknowledge Sherry Tanumihardjo for testing food samples.

Funding

Funding for this study was provided by HarvestPlus (Grant #8251), Washington, DC, with support from the UK Department for International Development. Additional support was provided by the Sight and Life Global Research Institute of Johns Hopkins University.

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Correspondence to Amanda C. Palmer.

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The authors declare that they have no conflict of interest.

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Palmer, A.C., Craft, N.E., Schulze, K.J. et al. Impact of biofortified maize consumption on serum carotenoid concentrations in Zambian children. Eur J Clin Nutr 72, 301–303 (2018). https://doi.org/10.1038/s41430-017-0054-1

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