您的位置:首页  > 论文页面

酿酒酵母发酵产乙醇过程中细胞生长与乙醇生产关系的研究

发表时间:2008-02-28  浏览量:2409  下载量:995
全部作者: 王智明,王灏,郭养浩,孟春
作者单位: 福州大学生物科学与工程学院生物工程系
摘 要: 利用连续流搅拌槽式反应器(CSTR)体系,结合秋水仙素抑制细胞生长实验,对不同稀释率下酿酒酵母乙醇发酵过程进行研究,实验表明乙醇产生速率与细胞生长密切相关。高细胞密度乙醇发酵可以提高乙醇发酵水平和葡萄糖利用率。高细胞密度乙醇发酵实验证实,在发酵到44 h时,乙醇浓度达到160 g/L;69 h时,其细胞干重为85 g/L,乙醇浓度高达167.121 g/L,葡萄糖的利用率达到了94.23%.
关 键 词: 微生物学;酿酒酵母;乙醇;发酵;连续流搅拌槽式反应器;比乙醇产率
Title: Study on the relationship between the growth of cell and the production of ethanol in the process of ethanol fermentation with Saccharomyces crevisiae
Author: WANG Zhiming, WANG Hao, GUO Yanghao, MENG Chun
Organization: College of Biological Science and Biotechnology, Fuzhou University
Abstract: Researched on the process of ethanol fermentation with Saccharomyces crevisiae at different dilution rate by CSTR system, we drew a conclusion that high cell concentration fermentation can improve the level of ethanol fermentation as well as the utilization rate of glucose. High cell concentration fermentation experiment we did confirmed the conclusion. At 44 h of the fermentation, the concentration of ethanol was 160 g/L. At 69 h, dry weight of cells was 85 g/L; ethanol concentration was 167 g/L, and the utilization rate of glucose was 94.23%. Besides, we found that the ability of ethanol producing by yeast cell lied on the growth of cells. In another words, well-grown cells have higher specific ethanol productivities.
Key words: microbiology; Saccharomyces cerevisiac; ethanol; fermentation; CSTR; specific ethanol productivities.
发表期数: 2008年6月第4期
引用格式: 王智明,王灏,郭养浩,等. 酿酒酵母发酵产乙醇过程中细胞生长与乙醇生产关系的研究[J]. 中国科技论文在线精品论文,2008,1(4):431-436.
 
0 评论数 0
暂无评论
友情链接