This project studies factors of APA chato, producing ethanol for liquid fermentation solution, syrup concentrate, sweet sorghum that concentrations of Yeast Saccharomyces cerevisiae using 40 SCSG borik, which result from the extraction species of sweet sorghum syrup concentrate at room temperature not adjustable and chakho p.a.Ngasan melt, the thick, sweet sorghum syrup to equal 5 by producing the fuel head 40 borik and ethanol tree shaped bottle internal size: 5000 ml ml at room temperature. Sample collection and analysis of quantity of ethanol, the concentration of cells, all of the sugar quantity, Ph. The temperature at the start and every 24 hours until 96 hours showed that ethanol from fermentation by not adjusting the APA chaduai head 5% yeast by volume. With a value of 132 grams per liter The long fermentation period of 48 hours, and when adjusting the constant chahai p.a. equivalent to 5 will have ethanol, don't wait too long to 106 grams per liter. The long fermentation period of 48 hours and 72 hours the hours of fermentation found that in a trial without adjusting the chami lakoet ethanol p.a.. maximum equal to 149 grams per liter and adaptive trials p.a. chathao with 5 equal to 101 grams per liter. When comparing results at 48 hour trials could adapted p.a., shifting production of ethanol up to 31.85% over a trial in which APA chathao with 5 produced the highest ethanol 26.10% and the result was a 72 hour trial of pH adjustment no ethanol production up to more than the experiment which 39.20% p.a. 5 adjust the chathao produced the highest ethanol 12.90%, respectively.
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