摇瓶中的泡形成及其后果
David Vonester1, Kyra Hoffmann1, Thomas Palmen1
1AVT - Biochemical Engineering, RWTH Aachen University Aachen Germany.
Engineering in life sciences
|October 24, 2025
概括
震动瓶中的泡形成,特别是非混的泡,可以意外地增加氧气传输能力 (OTRmax) 并降低实验可重复性. 这项研究调查了摇瓶种植中泡的原因和影响.
科学领域:
- 生物技术和生物工艺工程
- 微生物培养和发酵技术的微生物培养和发酵技术
- 过程分析技术 过程分析技术
背景情况:
- 泡形成是混合发酵中已知的问题,但在摇瓶种植中经常被忽视.
- 一般认为,非混的震动瓶可以防止发泡,但在特定条件下,情况并不总是如此.
- 了解摇瓶中的泡动力学对于准确的实验解释和过程优化至关重要.
研究的目的:
- 为了研究摇瓶中的泡形成现象,特别是非混系统.
- 为了确定泡对最大氧气传输能力 (OTRmax) 的影响.
- 评估泡对震动瓶实验可重复性的影响.
主要方法:
- 在各种工艺条件下对摇瓶中的泡形成的实验研究.
- 在有或没有泡的情况下测量氧气传递能力 (OTRmax).
- 分析诱发发泡的因素,包括容器内部和培养现象.
主要成果:
- 摇瓶中的泡可以将最大的氧气传输容量 (OTRmax) 提高三倍.
- 这种OTRmax的增加显著改变了工艺条件,对实验可重复性产生了负面影响.
- 发泡可以由容器组件,如分歧或传感器斑点引起,并且与相外现象有关,特别是在高粘度时.
结论:
- 摇瓶中的泡形成是改变工艺条件的重要因素,必须考虑.
- 由于发泡而观察到的OTRmax的增加可能导致误导性结果和降低可重现性.
- 建议采用确保相位培养和不受阻碍的液体流动的策略,以减轻摇瓶中的泡.
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