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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
Most productive species among the different vitamin B12 producing Pseudomonads is

P. aureofaciens
P. denitrificans
none of these
P. ovalis

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Industrially Useful Microbial Processes
It is mandatory that cultures and fermentation residues be sterilized before discard in case of Eremothecium ashbyii and Ashbya gossypii because they are

human pathogens
plant pathogens
none of these
plant mutants

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

both (a) and (b)
Propionibacterium
Acetobacter
Pseudomonas

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

Streptomyces erythreus
Streptomyces rimosus
Streptomyces aureofaciens
Streptomyces venezuelae

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Industrially Useful Microbial Processes
Which of the following microorganism produces only L(+) - lactic acid without further racemization ?

Lactobacillus delbrueckii
Leuconostoc mesenteroides
Rhizopus oryzae
Lactobacillus bulgaricus

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

alcohol treatment
acidification
autolysis
none of these

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