摘要
以玉米粉为原料,AY-15为发酵菌种,在浓醪发酵条件下,对氮源添加、糖化工艺和发酵条件进行了研究。结果表明,在酒精发酵过程中添加适量氮源,可明显提高酵母细胞的数量和发酵能力,缩短发酵周期12h;优化的糖化工艺为糖化酶用量150u/g原料,糖化时间60min;最适的发酵条件为初始pH值5.0,发酵温度33℃。
The effects of different conditions such as the addition of nitrogen, saccharifying technology, fermentation conditions, etc. on high-gravity alcohol fermentation were studied with corn powder used as material and AY-15 employed as fermentation strain. The results showed that the fermentation ability of yeast was promoted by adding suitable nitrogen, and fermentation period was shortened 12 h. The suitable saccharifying technology were glucoamylase concentration 150 u/g,treatment time 60 min. The suitable fermentation conditions were initial pH value 5.0,fermentation temperature 33 ℃.
出处
《酿酒科技》
2004年第6期40-42,共3页
Liquor-Making Science & Technology
关键词
酒精
浓醪发酵
生产工艺
玉米
alcohol
high-gravity fermentation
production technology
corn powder
