摘要
从发酵过程中的窖池分离数十株乳酸利用菌,选取6株检测其在有氧及缺氧条件下的乳酸盐浓度、有机酸浓度、乙醇浓度耐受性及在混合碳源条件下对利用乳酸盐的影响,显示降乳菌对有关环境因素具有一定的耐受性。模拟厌氧固体发酵显示大部分菌株降乳效果达到25%～50%,对乙酸等有机酸水平影响少,而对乙醇含量具有一定影响。
Several 10 lactate-utilizing bacteria strains were isolated from Luzhou-flavor liquor pits. Among them, 6 strains were selected and their tolerance to the concentration of lactate, organic acids and ethnol in the presence/absence of oxygen were investigated and the effects of mixing carbon source on lactate-utilizing bacteria strains were studied. The results showed that lactate-utilizing bacteria strains had certain environmental tolerance. Stimulated anaerobic solid fermentation tests showed that most of the selected strains could reduce lactate content by 25 %～50 % but had few effects on organic acids including acetic acid etc. and a few effects on ethanol content.
出处
《酿酒科技》
2009年第9期38-40,共3页
Liquor-Making Science & Technology
基金
湖北工业大学博士科研启动基金资助(32700223)
关键词
微生物
环境耐受性
模拟发酵
浓香型白酒
microbes
environmental tolerance
stimulated fermentation
Luzhou-flavor liquor
