FOOD PROCESSING AND PRESERVATION
FERMENTATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
glucose
|
|
|
ethanol
|
|
|
lactic acid
|
|
|
None of the above
|
Detailed explanation-1: -Lactic acid is a byproduct of fermentation. Lactic acid will build up in fermenting cells and eventually limit the amount of fermentation that can occur. The only way to get rid of lactic acid is through a chemical pathway that requires oxygen.
Detailed explanation-2: -Inadequate oxygen supply in human muscle cells leads to anaerobic respiration. Thus, lactic acid fermentation takes place to produce energy molecules. Lactic acid is the byproduct of this process.
Detailed explanation-3: -The lactic acid pathway reduces glucose into pyruvate during glycolysis and produces 2 ATP. Then, pyruvate is reduced using NADH to form lactic acid which is a byproduct of metabolism. Collectively, these two fermentation pathways produce ethyl alcohol, lactic acid and carbon dioxide as the major waste products.