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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
The aerated submerged bacterial fermentation to produce vitamin B12 employs strains of

Acetobacter
Propionibacterium
both (a) and (b)
Pseudomonas

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Industrially Useful Microbial Processes
The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills is

60%
95%
99%
70%

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Industrially Useful Microbial Processes
Bacitracin, an antibiotic similar to penicillin, is produced by

Aspergillus fumigatus
Bacillus polymyxa
Streptomyces erythreus
Bacillus licheniformis

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

Streptomyces erythreus
Streptomyces venezuelae
Streptomyces aureofaciens
Streptomyces rimosus

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

acidification
none of these
alcohol treatment
autolysis

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Industrially Useful Microbial Processes
The biotin level in obtaining L-gluatmic acid by fermentation using Micrococcus glutamicus is critical because

both (a) and (b)
too low level prevents growths, hence L-glutamic acid production
too high level prevents L-glutamic acid production
None of these

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