Question

Which chemical is obtained from microorganism Aspergillus niger}?

• A. Lactic acid
• B. Acetic acid
• C. Butyric acid
• D. Citric acid

Hint:

Citric acid production = Aspergillus niger. It's the most common commercial method.

Answer 1

The Correct Option is D

Aspergillus niger is a fungus widely used in the industrial production of citric acid.
Citric acid is used in food preservation, pharmaceuticals, and beverages.
Other acids:
- Lactic acid – produced by Lactobacillus}.
- Acetic acid – by Acetobacter}.
- Butyric acid – by anaerobic bacteria like Clostridium}.