在化学定义的介质中增强Saccharopolyspora erythraea E3::sucBA的红色素生产
Xiang Ke1, Shuohan Wang1, Xing Jiang1
1State Key Laboratory of Bioreactor Engineering, Qingdao Innovation Institute of East China University of Science and Technology, East China University of Science and Technology, Shanghai 200237, China.
Bioresource technology
|November 29, 2025
概括
使用Saccharopolyspora erythraea在化学定义的介质 (CDM) 中优化红色素发酵导致创纪录的产量. 补充谷氨酸和采用料批量策略显著提高了抗生素生产,提高了效率和可持续性.
科学领域:
- 生物技术和工业微生物学
- 代谢工程是代谢工程.
- 药品发酵 药品发酵是一种
背景情况:
- 红素是一种至关重要的宏类抗生素,通常由Saccharopolyspora erythraea.ea.通过复杂的农业副产品介质生产.
- 复杂的介质带来了挑战,包括批量变化,复杂的净化和高废水生物氧需求 (BOD),增加成本和环境影响.
研究的目的:
- 在化学定义的介质 (CDM) 中优化红色素发酵,用于S. erythraea的工程菌株 (E3::sucBA).
- 为了解决工程菌株的早期增长迟缓问题,并提高整体红红素产量.
主要方法:
- 代谢分析以确定工程菌株中生长限制因素.
- 通过补充谷氨酸,维生素和辅助因子进行中等优化.
- 在5L生物反应器中开发动态料批量度缩放发酵策略.
主要成果:
- 补充0.5g/L谷氨酸缓解了生长滞后,增加了营养消耗,并将红色素产量从930.1 mg/L提高到1307.9 mg/L.
- 动态食批量策略实现了4065.8毫克/升的红色素标位,细胞密度更高.
- 通过添加维生素和辅助因子进行进一步的优化,导致CDM中的4847.4毫克/升的红素产量创纪录.
结论:
- 在CDM中建立了一个优化红色素发酵的框架,克服了复杂介质的局限性.
- 这项研究为Actinomyces抗生素生产中介质定制和发酵过程的开发提供了宝贵的参考资料.
- 这种方法促进了更环保,更高效的红红的工业制造.
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