Recombinant Dna Technology And Applications

The question asks which equipment is essential for the industrial production of enzymes by growing microbes on a large scale. Let's analyze each option to determine the correct answer:

1. BOD Incubator: A BOD (Biological Oxygen Demand) incubator is primarily used for growing bacterial cultures at controlled temperatures, often used in laboratories for environmental testing. It is not typically designed for large-scale production.
2. Sludge Digester: This equipment is used in waste treatment plants to process sewage sludge and does not relate to growing microbes for enzyme production.
3. Industrial Oven: An industrial oven is used for drying and baking applications, not for cultivating microbial cultures.
4. Bioreactor: A bioreactor is a device or system designed to support a biologically active environment. It is used for cultivating microorganisms or cells under controlled environmental conditions on a large scale. This is essentially what is needed for industrial enzyme production.

Based on the above analysis, the correct equipment for large-scale growth of microbes for enzyme production is a Bioreactor. It provides the necessary conditions such as temperature, pH, oxygen, and nutrients that are crucial for microbial growth and enzyme production.