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Question

Meat can be spoiled by bacteria such as Salmonella, Clostridium is preserved by a unique method of food preservation. This technique creates free radicals in food, which can destroy cell membranes and attack DNA and protein and thus preventing the growth of microorganisms, Which is the process?


A

Pasteurisation

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B

Irradiation

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C

Vacuum drying

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D

Freezing

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Solution

The correct option is B

Irradiation


The correct answer is C (Irradiation).

Explanation of correct option.

The irradiation technique creates free radicals in food, which can destroy cell membranes and attack DNA and protein and thus preventing the growth of microorganisms.

Explanation of incorrect options.

Option A:

Pasteurization is the process in which food is treated with mild heat to eliminate pathogens and extend its shelf life.

Option B:

Vacuum drying is the form of preservation in which food is placed in a container from which air is removed.

Option D:

Freezing is the process of freezing food at 0°F, which leads to no microbial activity and chemical reaction deterioration.

Final answer: Irradiation- This technique creates free radicals in food, which can destroy cell membranes and attack DNA and protein and thus preventing the growth of microorganisms


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