摘要
本文论述了固定化酵母薯干原料带渣酒精发酵的中试结果。中试生物反应器容积为１０００Ｌ，采用改性海藻酸钙凝胶为固定化酵母细胞的载体。中试研究中设计了较合理的中试工艺流程，优选出较佳的发酵条件，并考察了生物反应器的性能。试验获得了如下结果：中试装置已运转１９２天，固定化酵母仍保持高活力，并可继续运转；发酵成熟醪酒精含量达６．５～８．０％（ｖ），它比同期传统式酒精发酵高出０．３～０．４％；淀粉利用率达９１～９２％；固定化酵母生物反应器的乙醇生产能力为９．５ＫｇＥｔＯＨ／Ｍ￣３·ｈ，它可比传统式发酵罐的生产能力提高１０～１２倍。
his paper presents the results of scale-up research about alcoholic fermentation from dried sweet potato with its dregs by immobilized yeast. The volume of pilot bioreactor is 1000 litre. The carrier of immobilized yeast is modified calcium alginate gel. In this research, the scheme of technological process is designed ; the performance of the bioreactor is observed and studied ; and the optimum conditions of alcoholic fermentation have been gained. The results of the pilot plant research are obtained as following: After the pilot plant has been operated for 192 days, the activity of immobilized yeast is high,and it can be continued to run;the alcoholic concentration in fermented mash is about 6.5～8.0% (v), which is 0. 3～0.4 percent higher than the alcoholic concentration of conventional free cells fermentation; the utilization rate of starch is 91～92% ;the alcoholic productivity of bioreacter is about 9. 5Kg-EtoH/m.3h, which is equal to 10～12 times that of the productivity of conventional free cells fermentor.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
1994年第2期1-7,共7页
Food and Fermentation Industries
关键词
固定化酵母
甘薯
乙醇
发酵
Immobilized yeast, Alcoholic fermentation, Sweet potato, Pilot plant
