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Industrially Useful Microbial Processes

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

invertase
racemase
dehydrogenase
isomerase

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

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

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Industrially Useful Microbial Processes
Which of the following substance is employed to neutralize the lactic acid as it is produced (because lactic acid bacteria do not tolerate high concentrations of acid?

MgSO4
CaCO3
Na2SO4
(NH4)2 HPO4

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Industrially Useful Microbial Processes
Which of the following micro organism utilizes lactose as a carbon source in production of lactic acid from whey media?

Lactobacillus bulgaricus
Lactobacillus pentosus
Lactobacillus delbrueckii
Leuconostoc mesenteroides

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Industrially Useful Microbial Processes
The sugar concentration of molasses used in fermentation should be

4-5%
20-30%
10-18%
30-38%

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Industrially Useful Microbial Processes
The production of acetic acid from ethanol is an

anaerobic process
aerobic process
a combination of both
None of these

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