Multiple choice

During fermentation by yeast in a fermenter, the alcohol produced is detrimental to yeast and eventually kills yeast. What can you do to reduce the alcohol production?

  1. Add buffer

  2. Add sugar

  3. Increase the pH

  4. Add oxygen

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Add oxygen: since the above fermentation is an anaerobic process performed by yeast, adding oxygen will stop the process and alcohol production will stop.