The bacterium used in the production of Swiss cheese (for holes) is: MCQ with Answer and Explanation

The bacterium used in the production of Swiss cheese (for holes) is:
A. Streptococcus thermophilus
B. Propionibacterium shermanii
C. Penicillium roqueforti
D. Lactobacillus acidophilus
Answer: Option B
Solution (By JKSSB Mock Tests)
Propionibacterium shermanii ferments lactate to propionic acid, acetic acid, and CO₂ during cheese ripening; the CO₂ forms the characteristic holes (eyes) in Swiss cheese. Lactobacillus and Streptococcus are starter cultures for acid production, Penicillium roqueforti is used for blue cheese.

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