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Vinegar and Citric Acid

Vinegar and Citric Acid
Sugar content of the fermentation medium for citric acid is maintained at

20-25 %
25-30 %
15-20%
10-15%

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Vinegar and Citric Acid
Vinegar production consists of

anaerobic fermentation
aerobic fermentation
aerobic fermentation followed by anaerobic fermentation
anaerobic fermentation followed by aerobic fermentation

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Vinegar and Citric Acid
In submerged process for the fermentation to produce citric acid,

both (a) and (b)
Fungal mycelium grows through out the solution in a deep tank
A. niger is used with solid substrate as sweet potato
A. niger floats on the surface of solution

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Vinegar and Citric Acid
Spirit vinegar is produced from

malted grain
ethanol
ale
fruit juices

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Vinegar and Citric Acid
Alegar is a type of vinegar produced from

fruit juices
malted grain
ethanol
ale

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Vinegar and Citric Acid
For the recovery of citric acid after fermentation, Ca(OH)2 is added to the slurry to

precipitate calcium phosphate
precipitate calcium sulphate
precipitate calcium citrate
precipitate calcium carbonate

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