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Research of the optimum concentration of sulfuric acid (H2SO4) on acid hydrolysis and enzyme at the optimum dosage of enzyme hydrolysis of newspaper waste in producing hydrolyzate at optimum levels in reducing sugars and fermentation of its hydrolyzate was conducted. The purpose of this study was to obtain the optimum enzyme dosage and concentration of sulfuric acid hydrolysis of waste paper to produce the best reducing sugar hydrolyzate and microbes to obtain the most effective use of microbial fermentation process. Descriptive and experimental method were used in this research. Descriptive method was applied for evaluating enzyme and acid hydrolysis, preparation hydrolyzate and starter of culture as well as fermentation. The fermentation was conducted by experimental methods using Completely Randomized Design (CRD) with three replications. This study parameter included reducing sugar content, ethanol content, microbial population, Dextrose Equivalent (DE) and pH. Our finding showed that the highest redu...

aip conference proceedings

Optimization of enzyme dosage and sulfuric acid (H2SO4) concentration on newspaper waste hydrolysis and fermentation of its hydrolyzate in single and consortium