Fidèle Wend-Bénédo TAPSOBA^1,, Zoénabo DOUAMBA¹, Fabrice BATIONO¹, Diarra COMPAORE-SEREME¹, Thomas Jean NDIG-YENOUBA², Wendkuni Anne Christelle YAOGHO³, Ndegwa Henri MAINA⁴, Hagrétou SAWADOGO-LINGANI¹

The aim of this study is to optimize composite breads of wheat and whole red sorghum flour, using natural improvers. Three types of local malted cereals were used as natural improvers. The red sorghum flour was fermented with EPSs producing LAB strain prior to use. The technological characteristics of the composite flours were determined using an alveograph. The physico-chemical and nutritional characteristics of the composite breads were determined using standard methods and their sensory profiles were evaluated by a panel of 35 consumers. The alveograph results showed an increase in dough resistance, deformation and a decrease in extensibility and elasticity with the level of incorporation of red sorghum flour. No significant difference (p>0.05) was observed based on the physicochemical analyses with the three types of local cereal malts, except with the incorporation of 15% of the red sorghum flour, dry matter and water content. Significant difference (p>0.05) wasn’t observed with the three types of cereal malts in the macronutrient contents of the composite bread samples. However, significant differences were observed according to the incorporation levels. An increase in protein content (11.65±0.91 - 15.76±0.54%/DM); crude fat content (1.80±0.08 - 2.65±0.16%/DM) and a decrease in carbohydrates content (84.82±0.19 - 79.72±0.47%/DM) was observed. Regarding the content of mineral elements, significant differences (p<0.05) were observed in the use of the three types of malt for the incorporation rate of 15% (Zn content), 30% (K and Mg content) and 50% (K content) of red sorghum flour. The free amino acid profile revealed six (06) free amino acids (Gly, Pro, Val, Met, Ile, and Lys) of which four are essential ones. Breads containing 30% of whole red sorghum flour was the most appreciated by consumers.

composite bread, cereal malts, improver, red sorghum, sensorial characteristics