Baffled Flask Culture
Baffled Flask Culture - Related Videos
08:39
Scale-Up of Mammalian Cell Culture using a New Multilayered Flask
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Cited by 4 •
2011
Cells play an instrumental and increasing role in research, and the discovery and development of new therapeutics. With this increasing need for greater number of cells we need more efficient and effective ways for growing and harvesting attachment dependent cells. A Multilayered flask with the right features can serve this purpose.
02:18
Preparing a Soil Bacterial Culture for Bacteriophage Infection
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2026
Source: Cross, T., et al., An Optimized Enrichment Technique for the Isolation of Arthrobacter Bacteriophage Species from Soil Sample Isolates. J. Vis. Exp.(2015)This video demonstrates the preparation of a bacterial culture for bacteriophage production. It covers the steps of inoculating a soil bacterium into a baffled flask, promoting uniform growth through aeration and shaking, and monitoring cell density using optical density measurements. Once the culture reaches the optimal growth phase,...
02:45
Culturing Neisseria gonorrhoeae in Metal-Depleted Conditions
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2025
Source: Maurakis, S., and Cornelissen, C. N. Metal-Limited Growth of Neisseria gonorrhoeae for Characterization of Metal-Responsive Genes and Metal Acquisition from Host Ligands. J. Vis. Exp. (2020)This video demonstrates the procedure for growing Neisseria gonorrhoeae under metal-limited conditions using a defined, metal-depleted medium.
02:48
Culturing the Rapidly Growing Bacterium Vibrio natriegens
0 Views •
2025
Source: Wiegand, D. J., Lee, et al., Cell-free Protein Expression Using the Rapidly Growing Bacterium Vibrio natriegens. J. Vis. Exp. (2019)This video demonstrates the cultivation and harvesting of Vibrio natriegens, a fast-growing bacterium, under aerated conditions to prepare bacterial pellets for crude extract generation.
02:36
Preparation and Isolation of Streptomyces venezuelae Spores from a Liquid Culture
0 Views •
2025
Source: Schlimpert, S., et al. Fluorescence Time-lapse Imaging of the Complete S. venezuelae Life Cycle Using a Microfluidic Device. J. Vis. Exp. (2016)This video demonstrates the cultivation and isolation of spores from Streptomyces venezuelae. Spores, dormant cells that help bacteria survive stress, are produced during nutrient limitation and collected through centrifugation. The method ensures a pure, cold-stored spore suspension for downstream applications.
FAQs
Internal ridges interrupt the circular flow that develops in a smooth-walled flask during shaking. This disruption creates greater turbulence, helping the liquid mix more thoroughly and increasing contact between the culture medium and the flask headspace. As a result, nutrients become more evenly distributed and oxygen transfer can improve, supporting more consistent growth throughout the culture.
Agitation speed affects the balance between oxygen availability and shear stress. Faster shaking can strengthen mixing and oxygen transfer, but excessive agitation may expose cells to damaging physical forces. Researchers therefore control the shaking rate together with other culture conditions, selecting settings that provide adequate oxygen without imposing unnecessary stress on the biological material.
Improved mixing reduces differences in nutrient and oxygen availability within the liquid culture. This creates a more uniform environment than one in which circulation remains concentrated in a smooth, rotating flow. The resulting consistency can support biomass production and make growth or metabolism measurements more representative of the culture as a whole.
The setup requires a baffled flask, a suitable liquid medium, the microorganism or other cells being studied, and controlled shaking. Cells are grown in the medium while agitation moves the culture across the flask’s internal ridges. Researchers also regulate relevant culture conditions and shaking speed so the system maintains useful oxygen transfer while limiting shear stress.
Researchers may choose this format when they need stronger mixing, improved gas exchange, or greater oxygen transfer during liquid culture. The approach is particularly useful when preparing microbial inocula, examining growth and metabolism, or producing biomass for later experiments. Compared with smooth-walled flasks, the internal ridges can improve culture uniformity and potentially increase biomass production.
These cultures can support observations of microbial or cellular growth and metabolism while also supplying inocula or biomass for downstream work. Because mixing and oxygen availability are influenced by the baffles and shaking conditions, the system can help researchers examine biological responses under controlled liquid-culture conditions and generate material for subsequent experiments.