糠醛含量对乙醇发酵菌株Saccharomyces kluyveri生长的影响  

Influence of furfural concentration to growth of Saccharomyces kluyveri

作　　者：路鹏[1] 沈世华[2] 王丽莉[1] 张晋丰 秦莉[1] 李国学[1] 

机构地区：[1]中国农业大学资源与环境学院,北京100094 [2]中国科学院植物研究所,北京100093

出　　处：《现代化工》2006年第z2期223-225,227,共4页Modern Chemical Industry

摘　　要：利用筛选得到的秸秆水解液乙醇发酵菌株Saccharomyces kluyveri进行了低糖浓度下不同糠醛浓度梯度的生长抑制作用实验。结果显示:当糠醛浓度在0.25 mg/mL时,对菌株生长具有促进作用;当糠醛浓度超过1 mg/mL时,对菌株的生长具有明显抑制作用。同时在50 mg/mL初始糖质量浓度条件下,菌株生长表现优于30 mg/mL初始糖质量浓度,葡萄糖的利用能力也相应提高。A microorganism strain Saccharomyces kluyveri was selected and cultured in several different furfural content medium under condition of low glucose concentration to find out the repressing scope of furfural concentration.Results show that:it stimulated microorganism growth while furfural concentration at 0.25 mg/mL,and the dry cell weight decreased with rising of the furfural concentration in the medium.It has restrained cell growth obviously when furfural concentration above(1 mg/mL).Meanwhile,the strain grow better under 50 mg/mL original sugar concentration condition than that under 30 mg/mL original sugar concentration,and also has raised glucose consumption ability of the strain.

关 键 词：糠醛 乙醇发酵 SACCHAROMYCES kluyveri 抑制作用 

分 类 号：TQ92[轻工技术与工程—发酵工程]