Evaluation of recombinant strains of Zymomonas mobilis for ethanol production from glucose xylose media

被引：43

作者：

Joachimsthal, E ^{[1
]}

Haggett, KD ^{[1
]}

Rogers, PL ^{[1
]}

机构：

[1] Univ New S Wales, Dept Biotechnol, Sydney, NSW 2052, Australia

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 1999年 / 77-9卷 / 1-3期

关键词：

recombinant Zymomonas mobilis; xylose fermentation; lignocellulosic hydrolysates; ethanol production;

D O I：

10.1385/ABAB:77:1-3:147

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The fermentation characteristics of two recombinant strains of Zymomonas mobilis, viz. CP4 (pZB5) and ZM4 (pZB5), capable of converting both glucose and xylose to ethanol, have been characterized in batch and continuous culture studies. The strain ZM4 (pZB5) was found to be capable of converting a mixture of 65 g/L glucose and 65 g/L xylose to 62 g/L ethanol in 48 h with a yield of 0.46 g/g. Higher sugar concentrations resulted in incomplete xylose utilization (80 h) presumably owing to ethanol inhibition of xylose assimilation or metabolism. The fermentation results with ZM4 (pZB5) show a significant improvement over results published previously for recombinant yeasts and other bacteria capable of glucose and xylose utilization.

引用

页码：147 / 157

页数：11

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