Proximate and nutritional composition of beer produced from malted sorghum blended with yellow cassava

Abstract

This research work investigated the proximate and nutritional composition of beer produced using sorghum blended with hybrid yellow cassava. Hybrid sorghum variety CSR-03H and two yellow cassava varieties were collected, and proximate and nutritional analysis was performed using standard methods. The sorghum malt was combined with yellow cassava varieties (in the order cassava: sorghum) at ratio 0:100 (control), 20:80, 30:70, 40:60 and 50:50. Fermentation of the samples was done for ten (10) days and analysis was performed every two (2) days interval. Proximate and nutritional analysis was carried out on the beer products using standard methods. After 240 h fermentation period, the pH and alcohol content ranged from 3.65 ± 0.01 to 4.10 ± 0.01 and from 3.63 ± 0.49% to 6.74 ± 0.41% respectively. Fat content, ash content, moisture content and crude protein values ranged from 0.30 ± 0.01% to 0.59 ± 0.01%, 0.42 ± 0.01% to 0.61 ± 0.02%, 76.10 ± 0.06% to 80.97 ± 0.02% and 0.30 ± 0.01% to 0.56 ± 0.01% respectively. Vitamin A and vitamin C content ranged from 12.38 ± 0.02 to 4.13 ± 0.02 μg/100 ml and 12.21 ± 0.04 to 17.39 ± 0.02 mg/100 ml respectively. The energy value of the products ranged from 124.74 ± 1.99 to 216.67 ± 1.96 KJ/100 ml. The study revealed that beer produced from sorghum blended with yellow cassava could be a rich source of nutrients and vitamins if employed as raw materials for beer production.