What types of bioreactors are commonly used in the laboratory?

A bioreactor is any manufactured or engineered device system that provides a biologically active environment to perform biochemical reactions in vitro using biological functions possessed by enzymes or organisms, and it is a biofunctional mimic, such as a fermenter, immobilized enzyme or immobilized cell reactor.
The key to the large-scale industrialization and commercialization of animal cell culture technology lies in the design of a suitable bioreactor. Since animal cells are very different from microbial cells, traditional microbial reactors are obviously not suitable for large-scale culture of animal cells. First of all, it must meet the requirements of low shear and good mixing state, which can provide sufficient oxygen for cell growth and cell synthesis of products.
What types of bioreactors are commonly used in the laboratory? According to the reactor material, it can be divided into glass tank reactor, stainless steel reactor and disposable reactor.
(1) Glass tank bioreactor
At present, most of the reactors used for process development and research at home and abroad are mainly glass tanks, glass tank bioreactors with flexible configuration, powerful, simple operation, easy to upgrade and expand, etc., is the best choice to carry out animal cell culture and microbial fermentation research and development projects, can be used for animal cells, E. coli, yeast, fungi, insect cells and plant cell culture, etc.
 (2) Stainless steel bioreactor
So far, the FDA-approved antibody drugs are basically produced in stainless steel reactors. Due to the low yield of antibodies in the early days, the production scale is mostly around 10,000L. Stainless steel reactors usually involve CIP modules, SIP modules, storage modules, etc., so the pipeline connection is very complex and requires high operator requirements.

Stainless steel bioreactor
 (3) Disposable bioreactor
Disposable bioreactor or disposable bioreactor after use is the use of disposable bags of bioreactors, compared with the traditional stainless steel reactor, the use of disposable reactors can all achieve a high degree of similarity, while also reducing production costs.
Disposable bioreactor
With the rapid development of cell line construction technology and medium development technology, cell density and antibody yield have increased dramatically, posing a serious challenge to large-scale cell culture.
In addition, since the main basis of reactor scale-up is still based on empirical scale-up principles, and there is still some controversy, such as the suitability of leaf tip rate as a scale-up principle. These factors undoubtedly increase the difficulty and risk of future antibody drug industrialization.

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