摘要
嗜鞣管囊酵母(Pachysolen tannophilus)As 2.1585可以直接发酵木糖产乙醇。研究了供氧水平、培养基初始pH值、接种量等条件对嗜鞣管囊酵母As 2.1585发酵产乙醇的条件。结果表明,在温度28℃、转速100 r/min条件下,嗜鞣管囊酵母发酵木糖产乙醇适宜在高好氧条件下进行,产乙醇的最适初始pH值为5.0,最适接种浓度2%,当水解液木糖浓度为3g/100 mL时,最大乙醇浓度为0.8g/100mL,是理论得率的85%。
Xylose fermentation directly by Pachysolen tannophilus As 2. 1.585 could produce ethanol. The effects of the relative technical conditions including the aeration level, the initial substrate pH value and the inoculation quantity on ethanol production were investigated. The results indicated that when the temperature and the rotating speed were kept at 28 ℃ and 100 r/min respectively, the fermentation should be carried out under high-aerobic conditions with the initial pH value as 5.0 and the optimum inoculation quantity as 2 %, and when the concentration of hydrolysis xylose was 3 %, the maximum ethanol yield rate was 0.8 g/100 mL （85 % of theoretical yield）.
出处
《酿酒科技》
北大核心
2008年第1期45-47,共3页
Liquor-Making Science & Technology
关键词
乙醇
嗜鞣管囊酵母
湿氧化
发酵
木糖
ethanol
Pachysolen tannophilus
wet oxidation
fermentation
xylose
