Produksi Bioetanol Limbah Nasi Aking Fermentasi Menggunakan Zymomonas mobilis dengan Perlakuan Konsentrasi Crude Enzim Bacillus amyloliquefaciens

Bioethanol fuel has the advantage of being more environmentally friendly than petroleum. is made from organic materials containing glucose. Baking rice contains 83.19% (w/w) carbohydrates and 29.70% amylose which can be converted into bioethanol through hydrolysis fermentation stages. This type research an experimental research, initial stage carried out to obtain reducing sugars using crude Bacillus amyloliquefaciens enzymes with concentrations 0%, 2.5%, 5%, 7.5%, 10%, 12.5%, 15 %, 17.5% for 6 days. The next step convert sugar ethanol Zymomonas mobilis at a concentration 10% 4 And final result distillation calculation levels alcohol meter. During processes, content was measured DNS (Dinitrosalicylic acid) method highest average obtained concentration, namely 1.417 g/mL. 3.03% lowest 0.61% 0% concentration.