提高平台化工生产中连续发酵的稳定性
Victoria Outram1, Andrew Yiakoumetti1, Charlotte Green1
1Sustainable Process Technologies, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
iScience
|March 4, 2025
概括
使用基本基因补充的等离子体成系统在连续的大肠杆菌发酵中增强稳定性. InfA,ssb和dapD系统在各种条件下确保了等离子体的稳定性,改善了生物基化学品的生产.
科学领域:
- 生物技术是生物技术.
- 微生物工程 微生物工程
- 合成生物学 合成生物学
背景情况:
- 等离子体稳定性对于高效的连续发酵过程至关重要.
- 现有的等离子体系统在长期培养过程中经常面临维持稳定性的挑战.
- 这限制了用于生产生物化学品的连续发酵的工业应用.
研究的目的:
- 评估在连续大肠杆菌发酵中五种基本基因基因等离子体成系统的疗效.
- 为了确定稀释速率和温度对等离子体稳定性的影响.
- 确定稳定等离子体维持和提高产品产量的最佳条件.
主要方法:
- 测试了五种基本基因 (infA,ssb,proBA,proC,dapD) 对于大肠杆菌中的等离子体成.
- 在酸盐限制下,以两种稀释速率 (0.033h-1和0.1h-1) 和两种温度 (30°C和37°C) 进行连续发酵.
- 在各种发酵条件下评估了等离子体的分离和结构稳定性.
主要成果:
- 通过infA,ssb和dapD补充稳定的等离子体在所有测试条件下都表现出分离稳定性.
- 较低的稀释速率降低了结构稳定性,但通过降低温度来缓解这一问题.
- 在0.033h-1和30°C时,proC,dapD和infA系统提供了分离稳定性而不会损害结构稳定性,从而导致更高的产量.
结论:
- 基于基因的基本等离子体成系统,特别是infA,ssb和dapD,在连续的大肠杆菌发酵中显著提高了等离子体的稳定性.
- 优化稀释速率和温度是实现稳定等离子体维护和最大化产量的关键.
- 这些发现通过确保可靠的基于等离子体的表达,扩大了生物基平台化学生产的连续发酵的实用性.
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