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A procedure to harmonize the hydrodynamic force during microbial cultivation in shaking flasks
Lúcia Chaves Simões1,2, Isabel Oliveira3,4, Anabela Borges3,4
1Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, Portugal.
Journal of Microbiology & Biology Education
|December 18, 2023
Summary
Standardizing hydrodynamic forces in orbital shakers improves microbial growth accuracy and reproducibility. This approach enhances understanding of agitation
Area of Science:
- Microbiology
- Biotechnology
- Bioprocess Engineering
Background:
- Shake flask cultivation is standard in labs, but cell growth is sensitive to hydrodynamic conditions.
- Agitation is used for aeration and nutrient transfer, often overlooking its impact on microbial metabolism.
- Variability in agitation velocity, shaking diameter, and flask size affects experimental outcomes.
Purpose of the Study:
- To present a straightforward method for standardizing hydrodynamic forces in orbital shakers.
- To enhance experimental accuracy and reproducibility in microbial cultivation.
- To improve student comprehension of agitation's role in microbial growth and metabolism.
Main Methods:
- Developing a simple approach to control and standardize hydrodynamic forces.
- Utilizing orbital shakers with defined parameters for agitation.
- Focusing on key variables: agitation velocity, shaking diameter, and flask size.
Main Results:
- The proposed approach allows for consistent hydrodynamic conditions during shake flask cultivation.
- Standardization leads to increased accuracy and reproducibility of microbial growth experiments.
- Demonstrates the critical influence of hydrodynamics on cell growth and metabolic processes.
Conclusions:
- Standardizing hydrodynamic forces is essential for reliable microbial cultivation in shake flasks.
- This method offers a practical solution for improving experimental design and data interpretation.
- Highlights the importance of considering fluid dynamics in bioprocess optimization.
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