Question:

Which among the following is NOT a method of Asepsis?

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Asepsis means keeping microorganisms out (exclusion/barrier); pasteurization is thermal destruction of existing microorganisms.
  • Washing
  • General cleanliness
  • Packaging
  • Pasteurization
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The Correct Option is D

Solution and Explanation

Step 1: Understanding the Concept:
Food preservation mechanisms are broadly divided into preventive barrier methods (asepsis), microbial destruction (sterilization/pasteurization), and growth inhibition (drying/freezing).

Step 2: Detailed Explanation:

Asepsis refers to the practice of keeping microorganisms out of foods and avoiding contamination from external sources.
Washing, hygienic plant cleanliness, protective skins/husks, and hermetic packaging are asepsis methods.
Pasteurization is a thermal processing method that actively destroys vegetative pathogens and enzymes in the product, rather than merely excluding them.

Step 3: Final Answer:

Thus, pasteurization is NOT a method of asepsis.
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