甜高粱秸秆固态发酵提取粗乙醇初步研究

Preliminary Study on Ethanol Distillation from Sweet Sorghum Stalks by the Solid Fermentation

以甜高粱秸秆为原料,采用简易的固态发酵法提取粗乙醇,酵母菌接种量为0.2%、糖化酶0.1%、纤维素酶0.8%、发酵时间为120 h。发酵过程中定期测还原糖含量和酒精含量。结果显示,发酵48 h酒精含量达到最高值,还原糖含量开始平缓地降低,达到114 h还原糖含量降到0.12%,发酵到120 h时开始蒸酒,得到8.33 g/100 g 61%粗乙醇。

The matured sweet sorghum stalks were used as experimental material, crude Ethanol was distilled by adopting a simple solid fermentation techniques under the condition of 0.2 % microzyme inoculation, 0.1% glucoamylase, 0.8% ceUulase, and the longest fermentation time was 120 h. During the fermentation time the reducing sugar contents and alcohol contents were measured. The results indicated that the alcohol contents reached the highest value and reducing sugar contents began to decrease slowly at the fermentation time of 48 h. At the fermentation time of 114 h, the reducing sugar contents decreased to 0.12%, distillation was processed and 8.33 g/100 g , 61% crude alcohol was obtained when the fermentation time reached 120 h.