Question

Which of the following microbes is used in the curation of coffee beans?

• A. Bacillus megaterium
• B. Aspergillus niger
  
• C. Bacillus thuringiensis
  
• D. Saccharomyces cerevisiae
  

Answer 1

The correct option is A Bacillus megaterium

• Beverages like wine are produced by fermentation of malted cereals and fruits by Saccharomyces cerevisiae.
• Curation of coffee and cocoa beans, tea and tobacco leaves are done by the bacteria Bacillus megaterium.
• Oxalic acid, acetic acid and citric acid are produced by fungus Aspergillus niger.
• Bacillus thuringiensis (Bt) is a species of bacteria that produces a protein called ‘cry’ protein, which is toxic to the insect larva and kills them. It acts as a biocontrol agent.