Produksi Bioetanol Oleh Saccharomyces cerevisiae FNCC 3210 pada Media Molases dengan Kecepatan Agitasi dan Aerasi yang Berbeda

Abstract

One alternative way to increase the production of bioethanol in molasses media is to give agitation and aeration during fermentation process. The aims of this research was to evaluate the highest ethanol production with agitation and aeration treatment. The research were designed with two treatment, aeration rate (0,1;0,3; and 0,6 vvm) and agitation speed (100, 200 and 300 rpm). Microbial concentration, reduction sugar content and ethanol production were observed every 4 hour interval for 24 hours. The results showed that during fermentation occured increasing of microbial concentration, decreasing of sugar content and increasing of ethanol production. Fermentation with agitation speed 100 rpm and aeration rate 0,3 vvm showed the highest ethanol production by 5,43% and microbial concentration around 4,07 g/L. Based on this study, the aeratioon rate treatment was significant to influence ethanol content, but the agitation speed was not significant to influence content of ethanol.