OPTIMASI PRODUKSI MICROBIAL-CELLULOSE DALAM BIOREAKTOR DRUM BERPUTAR (Rotary Drum Bioreactor)

Abstract

The purpose of this study is to design an innovative bioreactors drum that potentially obtain the maximum of
microbial cellulose and to determine the drum rotation on contact time of Acetobacter xylinum with nutrients
and air by slowly rotation. The tools designed on 5,10, 15, 20, and 25 rpm to obtain the best optimization of
microbial cellulose by comparing with a static culture. The best result of descriptive analysis and
experimentation ware at a speed of 5 rpm with wet weight of 981 gr, dry weight 68,86 gr, the thickness 5,31
mm, 44,42% of yield, 92,89% of water content, total of sugars before fermented was 13.66% and after fermented
for 5 days is 6,69%, with the percentage of reduction of 6,67% sugar synthesized by Acetobacterxylinum cell.