BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Heat, light, exposure to air, cooking in water and alkalinity are all factors that can destroy vitamins. If food is not eaten within several days, freezing is the best method to retain nutrients.

Detailed explanation-2: -Boiling results in the greatest loss of nutrients, while other cooking methods more effectively preserve the nutrient content of food. Steaming, roasting and stir-frying are some of the best methods of cooking vegetables when it comes to retaining nutrients ( 12, 13, 14, 15 ).