What is a bioreactor? Describe briefly the stirring type of bio-reactor.

Bioreactor is the vessel in which raw materials are biologically converted into specific products using microbial plant, animal (or) human cells.
Stirring type of bio-reactor 
* It is usually cylindrical (or) with a curved base vessel.
* It has an agitator system, an oxygen delivery system, pH control system and sampling ports.
* These vessels contains flat bladed stirrer.
* This stirrer facilitate even mixing and oxygen availability throughout the bio-reactor.