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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
The recovery of vitamin from fermentation broth is carried out prior to

acidification
alcohol treatment
none of these
autolysis

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Industrially Useful Microbial Processes
Which of the following when used in proper concentration stimulates the Ascomycetes fermentation of vitamin B12 and can be used to counteract toxicity of iron in Candida species?

Ni
Ca
Zn
Co

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Industrially Useful Microbial Processes
The organism B. brevis can be used commercially for the production of

tyrocidin
tyrothricin(bacitracin tyrocidin complex)
All of these
gramicidin A

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Industrially Useful Microbial Processes
The first penicillin isolated by Alexander Fleming, penicillin F is also called

benzyl penicillin
phenoxymethyl penicillin
n-heptyl penicillin
2-Pentenyl Penicillin

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Industrially Useful Microbial Processes
Chlorotetracycline a broad spectrum antibiotic is produced by

Streptomyces rimosus
Streptomyces aureofaciens
Streptomyces erythreus
Streptomyces venezuelae

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Industrially Useful Microbial Processes
Naringinase, an enzyme commonly used for removal of bitter taste from citrus juice is obtained from

A.flavus
A. niger
A. oryzae
S. cerevisiae

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