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Figure 5. Micronutrient increments from baseline concentrations needed for making a measurable biological impact on women from a public health perspective for various intake levels. For calculating micronutrient increments, we assumed 100% retention and (a) for iron, 5% and 10% bioavailability, and an 8 mg d–1 requirement; (b) for zinc, 25% bioavailability and a 3 mg d–1 requirement; (c) for β-carotene/provitamins A, assumed β-carotene/provitamins A to retinol bioconversion rates of 3:1, 6:1, and 12:1. We further assumed the crop provides 50% of the estimated average requirement (EAR) and a requirement of 500 µg EAR d–1.
