This study investigated the effect of wheat bran (WB) supplementation on the physical and sensory properties of a South African cereal fried dough (magwinya). The physical properties, instrumental texture, and sensory profile were determined for magwinya (100:0, control) and for wheat flour to wheat-bran ratios of 95:5 (MWB5), 90:10 (MWB10), 85:15 (MWB15), and 80:20 (MWB20). An increase in the proportion of WB in the fried dough showed no significant difference on the specific volume (1.47–1.54) of samples. The chroma value (30.19–22.29), lightness (35.92–28.98), and hue angle (55.03–47.77) decreased, while ∆E increased distinctly with the addition of WB. Magwinya supplemented with WB was less cohesive and easy to chew. Significant correlations were found between instrumental hardness and sensory springiness (r = −0.63; p < 0.05), as well as between instrumental cohesiveness and sensory springiness (r = −0.71; p < 0.01). Two principal components were identified, which accounted for 85.1% of the variance in the instrumental data. A substitution level of 5 and 10% WB was similar to the sensory properties of the control in taste, texture, and overall acceptability and can replace part of the wheat flour in the cereal fried dough production.

The development of more popular and nutritious amadumbe based food products such as biscuits from amadumbe may be necessary to improve its utilisation and commercialization. The aim of this study was to investigate the nutritional and organoleptic properties of amadumbe-soya composite biscuits. Biscuits were prepared by combining amadumbe and soya flours at ratios 90:10, 70:30 and 50:50. There was an increase in the crude protein content of composite biscuits when the percentage of soya was increased from 10 to 30% and then 50%. Similarly, an increase in the percentage of soya in composite biscuits gave rise to an increase in the levels of lysine in composite biscuits. The addition of soya to amadumbe improved the PDCAAS of composite biscuits to a value of 1 at 50% soya addition. The addition of soya flour to amadumbe flour also resulted in composite biscuits with an improved overall amino acid profile, mineral content, protein digestibility and PDCAAS (Protein Digestibility Corrected Amino Acid Score). The 50% amadumbe-50% soya composite biscuit was identified as having the optimum quality parameters.