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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
β-carotene is also known as

vitamin A
vitamin C
provitamin A
vitamin D

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

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

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Industrially Useful Microbial Processes
Alcohol production from starch and raw sugar utilizes selected strains of

Candida utilis
Candida pseudotropicalis
Saccharomyces cerevisiae
none of these

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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?

Leuconostoc mesenteroides
Lactobacillus pentosus
Lactobacillus delbrueckii
Lactobacillus bulgaricus

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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?

Na2SO4
CaCO3
MgSO4
(NH4)2 HPO4

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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
racemase
isomerase
dehydrogenase

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