alleryCitric acid is produced industrially by:
AAcetobacter aceti
BLactobacillus
CClostridium butylicum
DAspergillus niger (a fungus)
Answer & Solution
Correct answer: D. Aspergillus niger (a fungus)
**Aspergillus niger** (a fungus) is the industrial source of **citric acid**.
**Other acid-producing microbes:** **Acetobacter aceti**
→ acetic acid; **Clostridium butylicum**
→ butyric acid; **Lactobacillus** → lactic acid.
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