Industrially Useful Microbial Processes
Why high concentration of sugars are not employed in the fermentation medium?

Calcium lactate is not produced
Calcium lactate crystallizes from the medium and slows down the process of fermentation
None of these
High sugar concentration itself crystallizes

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Industrially Useful Microbial Processes
The early assay employed for measuring penicillin activity were based upon the quantity required to prevent growth of S. aureus over

None of these
200 mm diameter zone using the cylinder plate method of assay
24 mm diameter zone using the cylinder plate method of assay
20 mm diameter zone using the cylinder plate method of assay

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