Question

List four ways in which food can be preserved.

Answer 1

Four ways in which food can be preserved are as follows:
1) Pasteurisation: In this method, milk is preserved by heating at 72$°$C for 15 seconds and then cooling it immediately.
2) Refrigeration: In this method, food items are preserved at 5$°$C.
3) Freezing: In this method, food items are preserved at -18$°$C.
4) Sun drying: In this method, food items like vegetables are dried under the Sun to remove the moisture content from them.