Food preservation is the technique to prevent food spoilage, food poisoning, and microbial contamination in food. some methods of food preservation are-
1.) Using sugar-
Sugar is another common preservative used in jams and jellies. Sugar is a good moisture absorbent. By reducing moisture content, it restrains the microbial growth.
2.) Canning- The food contents are sealed in an airtight container at high temperatures. Meat, fish, fruits are preserved by canning.
3.) Salting- Salt and edible oils are two main preservatives which are used since ages to prevent microbial growth. This is why we add extra oil to pickles. Preservation by salt is known as salting. Salting helps to preserve fruits for a long term. Meats and fishes can also be preserved by salting.