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Souring of milk is due to -...

Souring of milk is due to -

A

Aerobic bacteria

B

Anaerobic bacteria

C

Both

D

None

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Question**: The question asks about the cause of milk souring, which is a common phenomenon in dairy products. 2. **Identifying the Key Bacteria**: The primary bacteria responsible for the souring of milk is **Lactobacillus**. This is crucial for understanding the fermentation process involved. 3. **Understanding the Process**: Lactobacillus converts **lactose**, the sugar present in milk, into **lactic acid**. This process is known as **lactic acid fermentation**. 4. **Recognizing the Conditions**: The fermentation process occurs under **anaerobic conditions**, meaning it can happen without oxygen. However, Lactobacillus is classified as **facultative anaerobic**, which means it can survive in both aerobic (with oxygen) and anaerobic (without oxygen) environments. 5. **Evaluating the Options**: The question provides multiple-choice options regarding the nature of the bacteria involved in souring milk. The correct answer must reflect that both aerobic and anaerobic conditions can facilitate the souring process due to the nature of Lactobacillus. 6. **Selecting the Correct Answer**: Based on the information, the correct answer is that souring of milk is due to **both aerobic and anaerobic bacteria** (Option C). ### Final Answer: Souring of milk is due to both aerobic and anaerobic bacteria, specifically Lactobacillus. ---
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