杀菌剂对蔗汁乙醇酵母生长和发酵性能的影响  

Influence of Bactericides for Saccharomyces cererisiae Growth and Fermentation Performance from Sugarcane Juice

作　　者：关妮[1] 杨登峰[1] 米慧芝[1] 陆琦[1] 

机构地区：[1]广西科学院国家非粮生物质能源工程技术研究中心,广西南宁530007

出　　处：《广西科学院学报》2011年第4期355-357,共3页Journal of Guangxi Academy of Sciences

基　　金：国际科技合作项目(2009DFA30820);广西科技攻关项目(桂科自0991077);广西科学院基金项目(10YJ25SW14)资助

摘　　要：为了解决以甘蔗为原料发酵生产燃料乙醇中出现的肠膜明串株菌(Leuconostoc mesenteroides)污染问题,在酵母的不同生长期添加不同浓度的专用杀菌剂T-9001糖菌净,研究T-9001糖菌净对酵母生长和发酵性能的影响。结果表明,在生长初期,T-9001糖菌净明显抑制酵母生长;在对数生长期,T-9001糖菌净浓度为0.001%、0.010%时,对酵母生长影响较小,浓度为0.100%时才明显抑制酵母生长。T-9001糖菌净的浓度不影响发酵液中的酒精浓度,但是随着T-9001糖菌净浓度的增加和发酵时间的延长,酵母死亡率增高。In order to solve the problem of dextran occurred in fuel ethanol industrial production from sugarcane juice,the Saccharomyces cerevisiae growth and fermentation were studied by adding different concentration of bactericides into different growth stage of S.cerevisiae.The results indicates that the bactericides can significant inhibit the early stage of S.cerevisiae growth.However,in logarithmic growth phase,slight effect of bactericides are detected in the concentration of 0.001% and 0.010%.When the concentration of bactericides reaches 0.100%,the S.cerevisiae growth was significantly affected.The bactericides will not affect the ethanol production.With the increase of bactericide concentration and fermentation time,the rate of S.cerevisiae death increases.

关 键 词：葡聚糖 杀菌剂 发酵 酿酒酵母 

分 类 号：Q591[生物学—生物化学] TQ926[轻工技术与工程—发酵工程]