[1]刘汝婷,刘 枣,王金华,等. 转运基因对大肠杆菌利用木糖产L-乳酸的影响[J].湖北工业大学学报,2022,(2):65-69.
 LIU Ruting,LIU Zao,WANG Jinhua,et al. The Effect of Transfer Gene on the Production of L Lactic Acid by E. Coli Xylose[J].,2022,(2):65-69.
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 转运基因对大肠杆菌利用木糖产L-乳酸的影响()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2022年第2期
页码:
65-69
栏目:
湖北工业大学学报
出版日期:
2022-04-29

文章信息/Info

Title:
 The Effect of Transfer Gene on the Production of L Lactic Acid by E. Coli Xylose
文章编号:
1003-4684(2022)02-0065-05
作者:
 刘汝婷123 刘 枣123 王金华123 高 娃123
 1 湖北工业大学生物工程与食品学院, 湖北 武汉 430068;
 2 发酵工程教育部重点试验室,湖北 武汉 430068;
 3 工业发酵湖北省协同创新中心,湖北 武汉 430068
Author(s):
 LIU Ruting123 LIU Zao123 WANG Jinhua123 GAO Wa123
 1 Key Laboratory of Ministry of Education for Fermentation Engin.,Hubei Univ. of Tech., Wuhan 430068,China;
 2 Hubei Provincial Cooperative Innovation Center for Industrial Fermentation, Hubei Univ. of Tech., Wuhan 430068,China;
 3 School of Biological Engineering and Food Sci., Hubei Univ. of Tech., Wuhan 430068,China
关键词:
乳酸发酵 mglB基因galP基因混合糖发酵
Keywords:
 lactic acid fermentation mgl B gene gal P gene mixed sugar fermentation
分类号:
Q815
文献标志码:
A
摘要:
 为加强大肠杆菌(Escherichia coli)WL210利用混合糖产L-乳酸的能力,通过RED同源重组技术敲除了甲基半乳糖苷转运系统基因 mglB、半乳糖转运系统基因galP,构建双缺陷乳酸工程菌WL230。结果表明:与出发菌株WL210相比,以6%混合糖(3%葡萄糖和3%木糖)为碳源,mglB/galP双基因缺陷菌株WL230同时可利用葡萄糖和木糖,其木糖利用速率和乳酸生产强度分别提高了298.92%、42.63%,且转化率高达90.21%。
Abstract:
 In order to enhance the ability of Escherichia coli WL210 to use mixed sugars to produce L lactic acid, the methylgalactoside transport system gene mglB and the galactose transport system gene galP were knocked out through the RED homologous recombination technology, and a new strain WL230 was constructed. The results showed that with 6% mixed sugar (3% glucose and 3% xylose) as the carbon source, the mglB/galP double gene deficient strain WL230 can simultaneously utilize glucose and xylose. Compared with the starting strain WL210, its xylose utilization rate and lactic acid production intensity were increased by 298.92% and 42.63% respectively, and the conversion rate was as high as 90.21%.

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备注/Memo

备注/Memo:
[收稿日期] 2021-03-09
[第一作者] 刘汝婷(1996-), 女, 湖北随州人,湖北工业大学硕士研究生,研究方向为食品科学
更新日期/Last Update: 2022-04-28