Name: Genetic Engineering
Uploaded: 2019-07-19
Duration: 6 min 20 s
Description: Genetic engineering is using technology to modify and manipulate an organism's genes. Learn more about genetic engineering and its process in the video.

Question

What is a bioreactor? List down the features of stirred tank bioreactor with labelled diagram.

Accepted Answer

The bioreactor is a closed system that supports the cultivation of organisms in order to form the desired product. This vessel carries out both aerobic and anaerobic processes. These are sterile cylindrical, stainless steel vessels (vary in sizes from litres to cubic metres) with temperature and pH controlling probes and gassing facilities required for the biochemical reaction. Large volumes of culture, i.e., 100 to 1000 litres of culture can be processed in bioreactors. Oxygen levels and the stirring rate are also monitored for maximised cell growth and productivity.

The most common type of bioreactor is stirred tank bioreactor. It has the following features:

A stirred-tank bioreactor usually has a cylindrical or curved base to facilitate the mixing of the contents.

The stirrer facilitates even mixing and oxygen availability throughout the vessel.

Alternatively air can be bubbled through the reactor.

The bioreactor has an agitator system, an oxygen delivery system, a foam control system, a temperature control system, pH control system and sampling ports.

Sampling ports helps to withdraw small volumes of the culture periodically.

What is a bioreactor? List down the features of stirred tank bioreactor with labelled diagram.

Important Questions on Biotechnology: Principles and Processes

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