NEETZoologyMicrobes in Human Welfare
What is the source of citric acid?
Options
- AAspergillus niger
- BAcetobacter aceti
- CClostridium butylicum
- DLactobacillus
Correct answer
A. Aspergillus niger
Step-by-step solution
Microbes are also used for commercial and industrial production of certain chemicals like organic acids, alcohols and enzymes. Examples of acid producers are Aspergillus niger (a fungus) of citric acid , Acetobacter aceti (a bacterium) of acetic acid; Clostridium butylicum (a bacterium) of butyric acid and Lactobacillus (a bacterium) of lactic acid.