Abstract
SummaryThe effect of substituting tigernut flour for wheat flour on the proximate, mineral and pasting properties of the resultant blends and cake quality were studied. The proximate composition of flour blends increased with increasing level of tigernut. Protein increased from 22.30 to 26.93% and fat from 4.17 to 7.21% resulting in an increase in energy value from 342.09 to 390.93 kcal. The pasting properties of the flour blends were affected significantly (P ≤ 0.05) by tigernut substitution. Pasting peak time and temperature decreased with increasing level of tigernut. Mineral elements such as iron and calcium increased from 3.13 to 4.19 and 54.01 to 56.41 (mg 100 g−1) respectively, with tigernut substitution. The weight and volume of cakes increased with tigernut level while batter density and volume index decreased. Acceptable cakes can be made with up to 30% tigernut flour substitution. Such composite cakes may help in reducing protein energy and micronutrient deficiencies.
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