CAJ | 학술논문

以糠醛渣为原料,直接同步糖化发酵( SSF)生产乙醇,并与水洗糠醛渣生产乙醇进行对比。通过考察不同条件来优化同步糖化发酵生产工艺条件,并分析表征了SSF过程中乙醇浓度和副产物浓度变化。优化条件为：糠醛渣底物质量分数10%,纤维素酶用量12%,无患子皂素质量浓度0.5 g/L,酵母接种量7 g/L,同步糖化发酵乙醇得率达到其理论得率的93.1%。与水洗糠醛渣相比,糠醛渣直接SSF过程可将原料吸附的5.50%葡萄糖部分转化为乙醇。水洗糠醛渣SSF生产乙醇所产生的副产物要远低于糠醛渣直接生产所产生的副产物,添加无患子皂素可有效抑制糠醛渣同步糖化发酵过程中副产物的产生。
이강철사위원료,직접동보당화발효( SSF)생산을순,병여수세강철사생산을순진행대비。통과고찰불동조건래우화동보당화발효생산공예조건,병분석표정료SSF과정중을순농도화부산물농도변화。우화조건위：강철사저물질량분수10%,섬유소매용량12%,무환자조소질량농도0.5 g/L,효모접충량7 g/L,동보당화발효을순득솔체도기이론득솔적93.1%。여수세강철사상비,강철사직접SSF과정가장원료흡부적5.50%포도당부분전화위을순。수세강철사SSF생산을순소산생적부산물요원저우강철사직접생산소산생적부산물,첨가무환자조소가유효억제강철사동보당화발효과정중부산물적산생。
Furfural residues and washed furfural residues were fermented to produce ethanol by simultaneous saccharification and fermentation ( SSF) . The combination factors ( substrate mass fraction, dosage of cellulase, yeast and Sapindus saponin) which affected the concentrations of ethanol and byproduct were optimized by the experiment. The yield of ethanol could reach 93. 1%of the theoretical yield during SSF under the conditions of 10% substrate concentration of unwashed furfural residue, 12%cellulase, 0. 5 g/L Sapindus saponin and 7 g/L inoculum solution. The glucose of furfural residues ( 5. 5%) were partly converted to ethanol compared with washed furfural residues. The byproducts ( lactic acid, glycerol and acetic acid ) concentrations of washed furfural residue in SSF were lower than those of unwashed furfural residue. And the addition of Sapindus saponin could inhibit the produce of byproducts.