| 초록 |
The effect of dilute sulfuric acid hydrolysis of the pure glucose and xylose on sugar yield and on fermentability of the hydrolysate by fermenting yeast, Brettanomyces custersii was investigated. The sugars was hydrolyzed in dilute sulfuric acid (0.5 - 2 wt.%) between 190-220℃ in batch reactor at a 9:1 liquid-to-solid ratio. The conditions of reaction were showed residence time, temperature, sulfuric acid concentration and it was used. The glucose and xylose which decides a ethanol yield decreased while the temperature and the concentration of sulfuric acid increased; however, the concentration of furfural, 5-hydroxymethylfurfural(5-HMF), acetic acid, formic acid was increased. Specially, the yield of ethanol and volumetric productivity decreased with increasing the concentration of acetic acid, formic acid, and levulinic acid. |
