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The Zinc (Zn), iron Fe) and copper (Cu) contents and their bioavailability in south-eastern Nigerian meals were evaluated. Their adequacy in meeting the nutritional requirements of pregnant and lactating women and preschool children were determined. Mineral content was determined using atomic absorption spectrophotometer after dry ashing. Phytate was determined by the ion exchange method. The bioavailability of Zn was evaluated using the phytate: Zn molar ratio (PZMR). Bioavailability of iron was determined by the in vitro procedure involving a simulated gastrointestinal digestion followed by dialysis. Portion sizes of meals consumed by these vulnerable groups were obtained during an interview and validated using data obtained from food consumption surveys. The amount of Zn and Fe in such portions were calculated and compared with the recommended intakes. Zn content of the meals ranged from 1.18mg to 4.99mg/100g, Fe from 1.10mg to 3.31mg/100g and Cu from 0.03mg to 0.21mg/100g edible portion or as consumed. Phytate levels varied from 4.11mg to 53.05mg/100g. The PZMR of the meals and serving portions were Keywords : Micronutrients, diets, vulnerable groups, Nigeria Agro-Science Vol. 3 (2) 2006: pp. 37-44

Adequacy of micronutrient content of south eastern Nigerian meals in meeting the nutritional needs of vulnerable groups