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The doubling time of Penicillium notatum is ___________

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The doubling time of Penicillium notatum is ___________

(a) 6 hrs

(b) 5 hrs

(c) 4 hrs

(d) 3 hrs

I got this question in final exam.

This intriguing question originated from Production of Antibiotics (Isolation of Fermentation Products) in portion Antibiotics & Enzyme Immobilization of Drug Biotechnology

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The correct option is (a) 6 hrs

Explanation: Growth phase is of 40 hrs duration with a doubling time of 6 hrs. Oxygen supply becomes critical during this phase due to an increase in viscosity of the medium. Production phase duration is 120 to 180 hrs.

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