Explain why milk is heated at a temperature greater than `135^(@)C` for 1 to 2 seconds? Comment.

Explanation

### Step-by-Step Solution:

1. **Understanding the Process**: Milk is heated to a temperature greater than 135°C for a very short duration of 1 to 2 seconds. This method is known as Ultra Heat Treatment (UHT).

2. **Purpose of Heating**: The primary purpose of heating milk at such a high temperature is to sterilize it. Sterilization is the process of killing or inactivating harmful microorganisms present in the milk.

3. **Effect on Microorganisms**: At 135°C, the heat is sufficient to kill most bacteria, viruses, and other pathogens that may be present in the milk. Microorganisms cannot survive at this high temperature, even for a brief period.

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