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Ethanol Production

Ethanol Production
Yeast is used in the production of

acetic acid
curd
cheese
ethyl alcohol

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Ethanol Production
What are different substrates used for ethanol production?

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

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Ethanol Production
The Zygomonas has a merit over yeast because

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

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Ethanol Production
What are the fermentation conditions for the ethanol production?

pH 6; temperature 35°C
pH 6; temperature 30°C
pH 5; temperature 35°C
pH 5; temperature 30°C

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Ethanol Production
High ethanol concentration

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

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Ethanol Production
Which of the following is used for agitation in a fermentor?

Impeller
Sparger
Baffles
All of these

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