木糖发酵菌株生产乙醇工艺条件的研究  

Ethanol production by xylose fermentation strain

作　　者：赖颖[1] 赵锦慧[1] 

机构地区：[1]周口师范学院生命科学系,河南周口466000

出　　处：《中国酿造》2011年第6期134-136,共3页China Brewing

摘　　要：以从土壤中筛选得到利用木糖高产乙醇的菌株LJ-45为出发菌株,在不同的工艺条件下进行木糖发酵生产乙醇的研究。确定最佳优化发酵条件:发酵温度为30℃,pH值为5.0,转速为90r/min,接种量为8%,装液量为120mL/250mL。在此发酵最佳条件组合下进行木糖发酵试验,乙醇产量最大为15.17g/L,木糖醇含量为7.94g/L。Using strain LJ-45 producing high level of ethanol as a starting strain, which was isolated from the soil. The optimal conditions of ethanol production by this strain were studied and obtained as followed： fermentation temperature 30℃, pH value 5.0, rotate speed 90r/min, inoculum 8% and liquid volume 120ml/250ml. Under these conditions, the maximum yield of ethanol was 15.17g/L and xylitol content was 7.94g/L.

关 键 词：木糖 乙醇 菌株LJ-45 发酵 

分 类 号：TQ920.6[轻工技术与工程—发酵工程]