Which of the following is not a method of dry heat sterilization   FlamingIncinerationPasteurizationHot air oven

Step 1: Break Down the Problem

We need to identify which option among the provided choices does not belong to the category of dry heat sterilization methods.

Step 2: Relevant Concepts

Dry heat sterilization is a method that utilizes high temperatures for a specific duration to kill microorganisms. Common methods include:

1. Flaming: Involves passing an instrument through a flame to sterilize it.
2. Incineration: The complete combustion of materials, resulting in destruction of microorganisms.
3. Hot air oven: Uses hot air to kill microorganisms, typically at temperatures of 160°C to 180°C for a set period.

Step 3: Analysis and Detail

• Flaming and Incineration are direct applications of fire and heat.
• Hot air oven is definitely a method of dry heat sterilization.
• Pasteurization, however, usually involves heating at lower temperatures but for longer periods, primarily to kill pathogens in liquids, and it is not a dry heat process.

Step 4: Verify and Summarize

After analyzing the definitions and methods of sterilization listed, it is evident that Pasteurization does not fit under dry heat sterilization methods.

Final Answer

Pasteurization is not a method of dry heat sterilization.