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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
Pectinase, an enzyme used for increasing yield and for clarifying juice is obtained by

A.flavus
A. niger
A. oryzae
all of these

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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
Which of the following is a heterofermentative micro-organism?

Lactobacillus delbrueckii
Lactobacillus bulgaricus
Leuconostoc mesenteroides
Lactobacillus pentose

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Industrially Useful Microbial Processes
The submerged fermentation of vinegar utilizes special fermentor designs known as

both (a) and (b)
cavitator
packed vinegar generator
acetator

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Industrially Useful Microbial Processes
Rickes et al. recovered active crystalline vitamin B12 from the culture of

Streptomyces lactis
Bacillus megaterium
Streptomyces griseus
Streptomyces olivaceus

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Industrially Useful Microbial Processes
The enzyme which converts optically active isomers of lactic acid to the optically inactive racemic mixture is

invertase
dehydrogenase
racemase
isomerase

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