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Ethanol Production

Ethanol Production
After the fermentation is over, ethanol is recovered by

filtration
distillation
cell disintegration
centrifugation

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Ethanol Production
How is air supply to the fermentor sterilized?

By heat filtration
Filtration through fibrous material
All of these
Filtration through granular material

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Ethanol Production
High ethanol concentration

promotes bacterial growth
inhibits yeast growth
promotes yeast growth
inhibits bacterial growth

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Ethanol Production
What are different substrates used for ethanol production?

Starch containing substrate
All of these
Juices from sugarcane or molasses or sugar beet
Waste product from wood or processed wood

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Ethanol Production
Which of the following is used to check vortex and to improve aeration efficiency in a fermentor?

All of these
Impeller
Baffles
Sparger

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Ethanol Production
The Zygomonas has a merit over yeast because

All of these
it has more osmotic tolerance to higher sugar concentration
it has more specific growth rate
it has high tolerance to ethanol

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