Question

Which of the following are methods of food preservation?

• A. Drying in the sun
• B. Salting using dry salt
• C. Storing in airtight containers
• D. Addition of iodine solution

Answer 1

Answer: (A), (B), (C)

The correct options are
A

Drying in the sun

B

Salting using dry salt

C

Storing in airtight containers

• Sun-drying is a very common method of food preservation. In this method, the moisture content of food is removed by keeping it in the sun which inhibits the microbial growth.
• Most of the bacteria cannot sustain high salinity, hence, drying with the aid of salt helps in inhibiting the growth of microorganisms.
• Canning is another method of food preservation where food is packed in airtight cans. Thus the microbes cannot enter and spoil the food. This method is very common for preserving seafood.
• Addition of iodine solution is used to detect the presence of adulterant (starch) in milk.