Fermentation is adversely affected by the____________________?
Correct answer: C. High concentration
- A. Presence of air
- B. Absence of air
- C. High concentration
- D. Presence of ammonium salts
Explanation
Excessively high substrate concentration can inhibit microorganisms through osmotic effects and can also hinder nutrient utilization, reducing fermentation performance. Air is often essential in aerobic fermentation, so its presence is not generally adverse.
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