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What is an antifoam agent used for?

Answer and explanation

Correct answer: To reduce foam

The governing concept is foam control during fermentation. Agitation, aeration, proteins and other surface-active substances can produce foam in a fermenter. Excessive foam may overflow, carry cells or product out of the vessel, block filters, interfere with sensors, and increase contamination risk. An antifoam agent reduces foam formation or causes bubbles to collapse, so option B is correct. It is not added to sweeten the medium, cut equipment or harden cells. Antifoam must be selected carefully because too much can reduce oxygen transfer or complicate downstream purification. Its purpose is therefore a practical control of the physical conditions of the culture, not a change in the identity of the product.

Related tags

BiotechnologyBioprocess EngineeringAntifoamFoam ControlPrinciples Of BiotechnologyClass 11 Mcq

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