摘要
对以糖蜜为原料培养高核酸酵母NY-1的发酵培养条件进行了优化。由实验得知,培养基最适初始pH为5.0,采用酵母浸粉和尿素的复合氮源,菌体生长较好;提高糖蜜中蔗糖水解率,可以延长酵母生长的对数期3h,有利于提高核酸酵母的浓度;采用挡板瓶提高溶氧后培养该酵母,菌体干重可达到15.4 g/L。
Sugar molasses was used to culture the High nuclear Saccharomyces.The fermentation condition was studied.The optimum medium ingredients and culture condition were obtained as followed：the initial pH 5.0,the complex nitrogen sources of yeast powder and urea;by increasing the rate of the hydrolyzation of the sucrose,the logarithm period of NY-1 is prolonged and the cell density was also increased.The cell dry weight was up to 15.4g/L when the yeast was cultured in baffled flasks.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2012年第1期62-65,共4页
Food and Fermentation Industries
关键词
高核酸酵母
RNA
蔗糖
糖蜜
high nuclear Saccharomyces
RNA
sucrose
sugar molasses
