FOOD TECHNOLOGY

FOOD PROCESSING AND PRESERVATION

FERMENTATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Select an effect of high temperatures on alcoholic fermentation:
A
Increased speed of ethanol production
B
Reduced methanol production rate
C
Reduction of the speed of ethanol production
D
Increased speed of methanol production
Explanation: 

Detailed explanation-1: -Temperature has a remarkable influence on bioethanol production, suitable temperature in fermentation is good condition for organisms and fungal to grow allowing yeast to react properly. From the results it was observed that high temperature kills yeast while low temperature slows down yeast reaction.

Detailed explanation-2: -Fermenting at a higher temperature can cause your yeast to grow too quickly and run out of nutrients before it finishes consuming the sugar in the wort, leading to an incomplete fermentation.

Detailed explanation-3: -Temperature, pH, aeration, substrate concentration, and nutrient availability all influence the fermentation process and metabolic processes.

Detailed explanation-4: -The optimum temperature range for yeast fermentation is between 90˚F-95˚F (32˚C-35˚C). Every degree above this range depresses fermentation. While elevated temperature is problematic in all phases of ethanol production, it is specifically hazardous during the later stages of fermentation.

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