The Effect of Inoculum Volume on Bioethanol Production from Saba Banana Hump (Musa Paradisiacal. L) Starch by Zymomonas Mobilis using Immobilization Technique

: Bioethanol is a liquid produced from the sugar fermentation process from carbohydrate sources by using the microorganism. In present study, Saba banana hump (Musa paradisiacal. L) sample was isolated by precipitating the starch with water for 12 hours. Furthermore, the starch was hydrolyzed using HCl 25%, and 14.01% of glucose solution was obtained. The starch obtained was tested using Fourier-transform infrared spectroscopy. Then the sample was fermented using Zymomonas mobilis microorganism immobilized by Ca-Alginate 4% with variation of inoculums 5%, 10%, 15% (v/v). Bioethanol from fermentation process was tested using gas chromatography (GC). The highest bioethanol content is 79.01% and the highest productivity that obtain was 2.66 g/L.Hours.