Question

we lose in the method of preservation​

Answer 1

Answer:

Food preservation includes food processing practices which prevent the growth of microorganisms, or other microorganisms, and slow the oxidation of fats that cause rancidity. Wikipedia

Explanation:

Hope this helps you mate xD

Answer 2

Answer:

The term food preservation refers to any one of a number of techniques used to prevent food from spoiling. It includes methods such as canning, pickling, drying and freeze-drying, irradiation, pasteurization, smoking, and the addition of chemical additives.