Industrially Useful Microbial Processes
During fermentation, pyruvic acid is converted into organic products such as

starch and cellulose
ethyl alcohol and lactic acid
glucose and fructose
citric acid and isocitric acid

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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

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