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Industrially Useful Microbial Processes

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?

(NH4)2 HPO4
CaCO3
Na2SO4
MgSO4

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

Leuconostoc mesenteroides
Rhizopus oryzae
Lactobacillus delbrueckii
Lactobacillus bulgaricus

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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 micro organism utilizes lactose as a carbon source in production of lactic acid from whey media?

Leuconostoc mesenteroides
Lactobacillus delbrueckii
Lactobacillus pentosus
Lactobacillus bulgaricus

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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
β-carotene is also known as

vitamin A
provitamin A
vitamin D
vitamin C

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