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Vinegar and Citric Acid

Vinegar and Citric Acid
Which substrate is used in the fermentation of citric acid?

Sucrose
Starch hydrolysate
All of these
Beet molasses

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

malted grain
fruit juices
ethanol
ale

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Vinegar and Citric Acid
Vinegar production consists of

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

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Vinegar and Citric Acid
Malt vinegar is produced from

ethanol
ale
fruit juices
malted grain

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Vinegar and Citric Acid
Which of the following microorganism is used for the production of citric acid?

Aspergillus niger
Streptococcus lactis
Lactobacillus bulgaricus
Saccharomyces cerevisiae

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Vinegar and Citric Acid
In liquid surface culture process for the fermentation to produce citric acid,

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
both (a) and (b)

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