Optimization of bioethanol production from jackfruit straw waste through the addition of a starter and fermentation duration

Bioethanol is an alternative fuel to replace fossil fuels that are renewable and more environmentally friendly. One way produce bioethanol through microbial fermentation of starch-containing materials. Jackfruit straw waste contains high levels carbohydrates sugar be used as raw material for making bioethanol. This research aims optimize production from jackfruit (Artocarpus heterophyllus) based on variations in the addition a starter duration process. The method was experimental with quantitative data collection. processed yield extract solution fermented by using starter. produced separated distillation. Starter mass time were varied reach optimum yield. type yeast Saccharomyces cerevisiae, nutrition provided urea. It found 40 grams distillate volume 13.6 mL 96 hours 15.2 ml. At condition, obtained 30 distillation temperature this study 70-78℃. refractive index, density, boiling point under conditions 1.35351, 0.36525 g/ml, 71-72℃, respectively.