摘要
以聚乙烯醇(PVA)和阴离子交换树脂混合制成的生物膜作为固定化酵母载体进行酒精发酵的研究,结果表明:发酵的最适条件为pH5.0,温度30℃,多次批量发酵时,酒精最高生成量可达5.74g/100ml,残糖为0.36g/100ml。进行流速为20ml/h的连续发酵20d,发酵稳定后酒精含量保持在5.50g/100ml左右。
Ethanol fermentation using biomembrane which was made by polyvinyl alcohol （PVA） and anion exchange resin as carder of immobilized yeast was studied. The result showed that： the optimum conditions of fermentation was pH5.0, tempera- ture 30℃. While batch fermentation repeated in several times, the highest ethanol concentration could achieve 5.74 g/100ml, the remaining sugar was 0.36 g/100ml. When continuous fermentation last 20 days at the flow-rate of 20 ml/h, the ethanol concen- tration kept at 5.50 g/100ml after the fermentation was steady.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2007年第8期244-247,共4页
Food Science
关键词
聚乙烯醇
固定化酵母
酒精发酵
polyvinyl alcohol
immobilized yeast
ethanol fermentation
