Fermentation Technology

Mubaiwa J

Publications

• Research Article
  Pilot Plant Optimization for Alcohol Production in Fermentation of an Opaque Beer by Varying Sieve Size
  Author(s): Zvidzai CJ, Chidewe C, Mubaiwa J, Tinofa S, Manjeese W and Musundire RZvidzai CJ, Chidewe C, Mubaiwa J, Tinofa S, Manjeese W and Musundire R
  
  The effect of mesh sieve sizes; 0.84 mm, 1.0 mm and 1.19 mm on alcohol concentration, free reducing sugars profile and total acids produced was determined during opaque beer fermentation. The initial free reducing sugars increased from 7.23 � 0.1 mmol/ml to 7.52 � 0.03 mmol/ml and 7.67 � 0.03 mmol/ml values as the sieve size decreased. Meanwhile, the final alcohol concentration attained for each fermentation reached leveled off after 72 hr producing 3.57 � 0.06% (v/v), 4.09 � 0.29 (v/v)% and 4.23 � 0.25 (v/v)% in order of decreasing mesh sieve size translating to a volumetric productivity of 0.49, 0.54 and 0.61 g.l-1.h-1, respectively. Use of 1.0 mm grinding sieve produced a final ethanol concentration which increased by 9% compared to that of 1.19 mm and 23% to that of 0.84 mm sieve. This realized a Yp/s value increase of 2% with the use of 1.0 mm sieve and 4% with 0.84 mm. The final or.. View More»
  DOI: 10.4172/2167-7972.1000111

  Abstract PDF