Question

Food remains safe at 5 degree Celsius. Give reasons.

Answer 1

The process by which spoilage of perishable food is prevented using chemical or physical methods is called food preservation.

By cooling,
The spoilage of food such as vegetables, meats, etc. can be prevented by keeping them at low temperature in refrigerator or deep freezers.

Low temperature prevents spoilage of food because it :
a. Retards the growth of bacteria.
b. Inactives the enzymes present in food items.

Answer 2

Food remains safe at 5 degree Celsius as it prevents the growth of bacteria.

Explanation:

Food is perishable, meaning it tends to deteriorate in quality as time goes by, and it would be unusable after the date of expiry. In order to elongate the period of usability and delay the date of expiry, food needs to be preserved.

In general, many food like vegetables, fruits, meat, etc. can be kept in a refrigerator to extend their shelf life. Meat is kept in the deep freezer while vegetables in the refrigerator. This low temperature will prevent bacteria from proliferating, thus preventing the food from spoiling.  Also refrigeration of fruits and vegetables is done to make the enzymes present in them become inactive, thus preventing expiry.