Question

List some of the old methods of food preservation followed at home giving examples and their viability in present times.

Answer 1

1. Drying:
   • In this method, moisture is removed from food by exposing it to sunlight, which prevents the growth of microorganisms.
   • Examples: Papad, dried vegetables, spices, dried fruits.
   • Viability: This method is still used because it is simple, inexpensive, and does not require special equipment.
2. Salting:
   • Salt is added to food to reduce moisture and prevent spoilage.
   • Examples: Pickles, salted fish, and vegetables.
   • Viability: It is still popular as it increases shelf life and improves taste.
3. Pickling:
   • Food is preserved using salt, oil, spices, and vinegar, which prevent spoilage.
   • Examples: Mango pickle, lemon pickle, chilli pickle.
   • Viability: It is still widely followed in homes due to its traditional value and long shelf life.
4. Use of Sugar:
   • Sugar is used in high concentration to prevent microbial growth.
   • Examples: Jam, jelly, murabba, and fruit preserves.
   • Viability: It is still used at home as well as in food industries.
5. Fermentation:
   • Useful microorganisms are used to preserve food and improve its flavour and nutritional quality.
   • Examples: Curd, idli and dosa batter.
   • Viability: This method is still followed because it enhances taste and nutritional benefits.