Abstract
African yam bean seeds (Sphenostylis sternocarpa) Iru-like condiment was produced with 0.005 and 0.0075 g broth/g seed different concentrations of Bacillus amyloliquefaciens culture. The sample fermentation was conducted at 35 °C for 5 days. Proximate composition, water absorption capacity, oil absorption capacity, pH, and titratable acidity of the fermented samples were assessed using standard methods. Proximate composition of fermented African yam bean (AYB) condiment with 0.005 g broth/g seed inoculum concentration as determined were crude protein (6.86%-7.74%), crude fat (1.37%-1.71%), crude fiber (2.73%-4.81%), ash content (1.02%-1.59%), moisture content (9.71%-14.92%), dry matter (85.10%-90.28%), carbohydrate (70.43%-77.16%). The pH, total titratable acidity, water absorption capacity (WAC), and oil absorption capacity (OAC) of the fermented condiment were 6.76-7.60 ml, 0.07-0.09 ml, 0.50%-0.92%, and 0.55%-0.65% respectively. The fermented condiment produced with 0.0075 g broth/g seed inoculum concentration had its proximate composition as determined as crude protein (8.10%-8.53%), crude fat (1.81%-2.12%), crude fiber (2.83%-3.73%), ash content (1.23%-1.42%), moisture content (8.97%-12.81%), dry matter (87.19%-90.91%), carbohydrate (72.22%-76.13%) while its pH, total titratable acidity, WAC and OAC ranged as 7.10-8.76 ml, 0.06-0.11 ml, 0.38%-0.81% and 0.54%-0.84% respectively. The sensory acceptability scores reveal condiment samples from 0 hours as the best-preferred sample produced from the use of the inoculum concentrations. The study showed that AYB seeds condiments produced were significantly different in terms of different concentrations of starter culture used. Although the single starter culture did not deliver acceptable products during the fermentation, it played a few parts within the product quality.
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