Question

What is the most common food preservation method?

• A. Freezing
• B. Fermentation
• C. Heating
• D. Freeze drying

Answer 1

The correct option is C

Heating

Explanation for correct option:

The correct option is C.

• The most common food preservation method is heating.
• Heating is an effective way to preserve food because harmful pathogens are killed at high temperatures close to the boiling point of water.
• The use of heat in food kills most of the pathogenic microorganisms.

Explanation for incorrect options:

A. Freezing process involves storing food at a temperature below 0C where microorganisms cannot grow. At this temperature, chemical and metabolic reactions slow down.

B. Fermentation is one of the ancient food preservation methods that involved the breakdown of carbohydrates into alcohol or acid.

D. Freeze Drying is a method of dehydrating frozen foods placed inside a vacuum. The moisture in foods is converted into gaseous vapors that leave the food during processing.

Final Answer: Heating is the method of food preservation.