Identify the part of a bio-reactor which is used as a foam braker from the given figure.  

The correct answer is C

Explanation:

• A bioreactor is a vessel or device in which biological reactions and processes are carried out under controlled conditions to produce biological products. 
• A bioreactor provides the optimal conditions for achieving the desired product by providing optimum growth conditions (temperature, pH, substrate, salts, vitamins, oxygen).
• Foaming is a common issue in bioreactors, particularly in processes where gas sparging is employed. Foam formation can hinder the efficient operation of the bioreactor and may affect the quality of the product.
• Foam breaker: The foam breaker (identified as 'C' in the figure) is designed to disrupt and dissipate foam generated during the bioreactor operation. It ensures smooth processing by preventing foam overflow and maintaining the integrity of the biological processes.
• Foam breakers can be mechanical devices, such as rotating blades, or chemical agents that reduce surface tension and eliminate foam.