Multiple choice

Many microorganisms like Aspergillus niger, Penicillium luteum, Candida catenula, Candida guilliermondii and Corynebacterium species produce citric acid. Which of the following organisms is genetically modified for improved industrial production of citric acid?

  1. Candida catenula

  2. Penicillium luteum

  3. Aspergillus niger

  4. Corynebacterium species

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For improved industrial production of citric acid, mutant strains of Aspergillus niger have been developed. These mutant strains can tolerate high sugar concentration and low pH with reduced synthesis of undesirable byproducts.