Effects of Bran and Hull Retention on the Sensory and Nutrients Composition of “Ogi Flour” Prepared from Maize, Millet and Sorghum

Abstract

The effect of Bran and Hull retention on the sensory and nutrient composition of “Ogi flour prepared from maize, millet are sorghum were investigated. The maize and sorghum were soaked for 72 hours, while the millet was soaked for 48 hours, decanted, washed and wet milled into a paste which was oven dried at 50°C for 24 hours and milled into fine flour. The proximate composition, functional properties, pasting properties of the “Ogi” flour was determined as well as evaluating the sensory properties. The moisture content, ash, fat, crude fibre, protein and carbohydrate respectively ranged thus: 2.63 – 8.67%, 1.13 – 1.41%, 4.57 – 7.20%, 1.30 – 5.75%, 4.27 – 7.87% and 75.84 – 82.88%. The presence of Bran and Hulls led to a decrease in moisture content, on increase in ash fat and protein content with decrease in carbohydrate values. The bulk density, water absorption capacity, swelling power and solubility respectively ranged as follows: 0.56 – 0.61g/ml, 1.00 – 2.00g/g, 5.50 – 6.95g/g, 16.10 – 24.40% the presence of Bran led to a decrease in bulk density in maize and millet ogi, a decrease in water absorption capacity in millet and sorghum ogi. The pastry properties of peak, trough breakdown, final and setback viscosities showed a decrease in values from the control samples values for peak time died not differ significantly (P<0.05) between the sieved and unseived ogi flours. While the presence of Bran and Hulls increased pasting temperature in maize and sorghum ogi flours. Result for sensory evaluation showed the control samples were the most preferred for all the attributes. This study revealed that ogi flour can be prepared with a by-pass of the sieving process to enhance nutrient retention.