Comparative Analysis of Bioethanol Produced From Cassava Peels and Sugarcane Bagasse by Hydrolysis Using Saccharomyces Cerevisiae

Abstract

The production of bioethanol from cassava peels and sugarcane bagasse was examined using Simultaneous Saccharification and Fermentation (SSF). Acid hydrolysis (5% H2SO4) was used to hydrolyze 20 g, 30 g and 40 g, each of the cassava peels and sugarcane baggase substrates while dried active baker’s yeast strain (Saccharomyces cerevisiae) was further used to ferment the substrates for 7 days. The quantity of bioethanol produced, average yield, density and proximate composition were determined. The quantity of bioethanol produced from cassava peels at 20 g was 12.37 g/cm3, at 30 g was 14.46 g/cm3and at 40 g was 16.07 g/cm3  while that of sugarcane bagasse 20 g was 5.46 g/cm3, at 30 g was 8.03 g/cm3and at 40 g was 10.44 g/cm3 . The aaverage yield for cassava peels was 16 % while that of sugarcane baggase  was 9.03%. The density for cassava peels was 0.871 g/cm3 while that of sugarcane baggase  was 0.893 g/cm3 . While the proximate composition for cassava peels was; moisture (2.18 ± 0.18)%, ash  (12.98 ± 0.78)%, lipid (1.87 ± 0.36)%, fibre (11.96 ± 0.4)%, protein (3.15 ± 0.05)% and carbohydrate (67.39 ± 0.15)% and that of sugarcane bagasse was; moisture (5.03 ± 0.35)%, ash (8.43 ± 0.63)%, lipid (0.81 ± 0.15) %, fibre (22.76 ± 0.51)%. This research showed that bioethanol could be produced from cassava and sugarcane baggase with cassava peels giving a higher quantity of bioethanol over sugarcane baggase.Keywords: Proximate, Bioethanol, Cassava, Sugarcane, Bagasse, yeast, Fermentation