Question:

Citric acid is produced by:

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Match each acid to its known industrial fermentation organism.
Updated On: Sep 23, 2026
  • Aspergillus niger
  • Clostridium butylicum
  • Acetobacter aceti
  • Trichoderma polysporum
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The Correct Option is A

Solution and Explanation

Step 1: Understanding the Concept:
Several industrially important organic acids are produced commercially using microbial fermentation, each acid being associated with a specific, well-known industrial microorganism.

Step 2: Identifying the Organism:
Citric acid is industrially produced by fermentation using the fungus Aspergillus niger, which is grown on a sugar-rich medium under controlled conditions.
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