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In a batch culture of Penicillium chrysogenum, the maximum penicillin synthesis occurs during the
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- lag phase
- exponential phase
- stationary phase
- death phase
Correct Option: C
In batch cultures of microorganisms, especially bacteria, the exponential phase is concerned with the multiplication and high metabolic activities of the microbes along with growth. But as the microbe advances to the stationary phase, metabolic activities reach the maximum limit with stagnancy in multiplication and growth of the bacteria. During this phase, there occurs maximum production of secondary metabolites such as toxins. So, Penicillium chrysogenum synthesizes penicillin at maximum concentrations during the stationary phase of the batch culture.
