【摘要】 试验以甜高粱秆为原料进行固态发酵,通过单因子试验和正交试验,研究了不同甜高粱品种,不同菌种,以及发酵条件(包括pH值、接种量、发酵温度、发酵时间等)对发酵产物酒精度的影响,提出了适合生产燃料乙醇的条件。研究结果表明:四粒美为适宜发酵的甜高粱品种;丹宝利酵母为适宜的发酵菌种;最终确定甜高粱秆生产燃料乙醇的丹保利酵母较适宜发酵条件为:pH6.0,接种量为5%,发酵温度为33℃,发酵时间为3d;最终发酵产物酒精度为4.1%(v/v)。在此条件下,按每亩收获甜高粱秆5000kg计算,燃料乙醇的产量可达328.0kg。更多还原

【Abstract】 In this study, sweet sorghum straw was used as material for solid-state fermentation to produce ethanol. In order to confirm the suitable conditions of solid-state fermentation, through single-factor test and orthogonal test, the effect of different sweet sorghum varieties, different fermentation strains, and different fermentation including pH, inoculation amount temperature, time were studied.The results showed that the Silimei was suitable fermentation variety, Dan Baoli was suitable fermentation yeast strains. Through the orthogonal experiment, the optimization fermentation was decided as following: pH6.0, inoculation amount was 5%, fermentation temperature was 33 ℃, fermentation time was 3 d. And alchol degree of final production was 4.1%(v/v). The optimumization conditions, if harvest yield of sweet sorghum straw was 5000 kg/mu, the output of ethanol would be 328.0 kg.更多还原