同时增强微生物生物质的形成和乳酸合成在Bacillus coagulans通过乙酸补充剂通过乙酸补充剂
Guiping Gong1, Linpei Liu1, Bo Wu1
1Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041, PR China; Rural Energy and Ecology Research Center of CAAS, Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu, 610041, PR China.
Journal of environmental management
|November 15, 2025
概括
用乙酸盐补充葡萄糖发酵可以增强Bacillus coagulans的生长和乳酸的产生. 这种代谢策略可以提高微生物生物质的料和乳酸产量,用于工业应用.
科学领域:
- 微生物生物技术 微生物生物技术
- 代谢工程是代谢工程.
- 工业微生物学 工业微生物学
背景情况:
- 酸抑制在乳酸发酵中挑战微生物生长和产品产量.
- 凝血菌是乳酸生产的关键微生物.
- 同时提高微生物生物质和乳酸产量在工业上具有重要意义.
研究的目的:
- 研究乙酸补充剂作为一种改善微生物生物质和Bacillus coagulans中的乳酸生产的策略.
- 为了阐明酸盐与葡萄糖共同使用的代谢效应.
- 评估这种方法的工业可行性.
主要方法:
- 转录分析以确定上调代谢途径.
- 使用乙酸补充的受控生物反应器实验 (5L).
- 测量葡萄糖消耗,使用,细菌生物质和乳酸生产.
主要成果:
- 乙酸补充剂可提高关键代谢途径的调节:乙酸同化,TCA循环,氧酸突变和葡萄糖生成.
- 添加10g/L的酸盐增加了葡萄糖消耗,细菌生物质 (17.6%) 和乳酸产量 (15.3%).
- 由于发酵性能得到改善,的使用量减少了6.7%.
结论:
- 乙补充剂是一种有效的策略,可以增强细菌生物质和Bacillus coagulans中的乳酸生产.
- 这种方法提供了双重好处:生产有价值的微生物生物质用于动物料,并增加作为平台化学品的乳酸产量.
- 通过葡萄糖和酸盐的共同利用进行代谢调节,为优化工业发酵提供了一种简单但强大的方法.
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