Question:
Which of the following microbes is used in the production of yoghurt?
Which of the following microbes is used in the production of yoghurt?
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Dairy microbes: Yoghurt = Streptococcus + Lactobacillus; Cheese = Penicillium.
Updated On: May 4, 2026
- Penicillium roquefertii
- Streptococcus thermophilus
- Streptococcus aurifaciens
- Acetobacillus aceti
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Yoghurt is produced by fermentation of milk using lactic acid bacteria.
Step 1: Identify microbes used. Common bacteria used in yoghurt production:
• Streptococcus thermophilus
• Lactobacillus bulgaricus
Step 2: Analyze options.
• (A) Penicillium roquefertii → Cheese production $\times$
• (B) Streptococcus thermophilus → Yoghurt production \checkmark
• (C) Streptococcus aurifaciens → Not used $\times$
• (D) Acetobacter aceti → Vinegar production $\times$
Step 3: Conclusion. \[ \text{Yoghurt is produced using Streptococcus thermophilus} \]
Yoghurt is produced by fermentation of milk using lactic acid bacteria.
Step 1: Identify microbes used. Common bacteria used in yoghurt production:
• Streptococcus thermophilus
• Lactobacillus bulgaricus
Step 2: Analyze options.
• (A) Penicillium roquefertii → Cheese production $\times$
• (B) Streptococcus thermophilus → Yoghurt production \checkmark
• (C) Streptococcus aurifaciens → Not used $\times$
• (D) Acetobacter aceti → Vinegar production $\times$
Step 3: Conclusion. \[ \text{Yoghurt is produced using Streptococcus thermophilus} \]
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