摘要：Bioethanol production from unbeaten pulp,beaten pulp,non-printed paper and laser printed paper by the use of simultaneous saccharification and fermentation (SSF) method was carried out in the this research.The yeast used was Saccharomyces cerevisiae which was applied in various concentrations (10 5,15%,and 20%) and incubation times (3,4,and 5 days).Gas chromatography was used to quantity ethanol concentration and this was used to calculate ethanol yield and cellulose conversion.Carbohydrate contents of samples were relatively high (over 70%) indicating that the pulps have good potential for bioethanol production.The highest cellulose conversion (8.24%) and ethanol production (5.4%) were obtained from beaten pulp fermented at 15 % yeast concentration and incubated for 3 days.Beating treatment was assumed beneficial to increase ethanol yield,however chemical and mineral additives in paper appeared to inhibit enzymatic hydrolysis processes and ink inhibited fermentation of simple sugar.
其他摘要：Penelitian ini bertujuan untuk mengidentifikasi produktivitas bioetanol dari unbeaten pulp,beaten pulp,non-printed paper dan laser-printed paper dengan menggunakan metode sakarifikasi dan fermentasi simultan (simultaneous saccharification and fermentation
