Nutritional composition and sensory acceptability of ready-to-eat (RTE) breakfast food developed from root and tuber crops

Abstract

This study investigated the use of local root and tuber crops to partially replace corn as the sole carbohydrate source in the production of a ready-to-eat (RTE) breakfast food. Extreme vertices mixture design was used to formulate composites from Cassava, Orange-fleshed Sweetpotato (OFSP) and Bambara groundnut flours to replace 55% of maize. The nine formulations obtained were processed into RTE by drum drying. Protein, fat and ash content increased with the increase in Bambara groundnut content, while carbohydrate and fiber content increased with increasing cassava and Orange-fleshed Sweetpotato flour content. Beta-carotene content increased with increasing OFSP substitution. Protein and starch digestibility was affected by drum drying. Low values (40.49 to 47.39) for the glycemic index were observed for various formulations. Sensory evaluation of the products showed significant differences (p < .05) in terms of color, sweetness and overall acceptability of the breakfast product. The products were highly acceptable to consumers.