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Stirred-tank bioreactors have been designed for
A
Availability of oxygen throughout the process
B
Addition of preservatives to the product
C
Purification of the product
D
Ensuring anaerobic conditions in the culture vessel
Detailed Solution
A stirred-tank reactor is usually cylindrical or has a curved base to facilitate the mixing of the reactor contents.
The stirrer facilitates even mixing and oxygen availability throughout the bioreactor; alternatively, air can be bubbled through the reactor (sparged stirred-tank).
The bioreactor also has an oxygen delivery system, a foam control system, a temperature control system, a pH control system and sampling ports.
Purification and addition of preservatives are parts of downstream processing, done after the bioreactor stage.
Hence stirred-tank bioreactors are designed for availability of oxygen throughout the process.
The stirrer facilitates even mixing and oxygen availability throughout the bioreactor; alternatively, air can be bubbled through the reactor (sparged stirred-tank).
The bioreactor also has an oxygen delivery system, a foam control system, a temperature control system, a pH control system and sampling ports.
Purification and addition of preservatives are parts of downstream processing, done after the bioreactor stage.
Hence stirred-tank bioreactors are designed for availability of oxygen throughout the process.