Explain the different methods of food preservation. [5 MARKS]
Explain the different methods of food preservation. [5 MARKS]
Naming : 1 Mark each
The different methods of food preservation are as follows
1. Chemical Method
Salts and edible oils are the common chemicals used to check the growth of microorganisms. Sodium benzoate and sodium metabisulphite are common preservatives.
2. Preservation by Common Salt
Meat and fish are covered with dry salt to check the growth of bacteria.
3. Preservation by Sugar
Sugar reduces the moisture content which inhibits the growth of bacteria which spoil food.
4. Preservation by Oil and Vinegar
Use of oil and vinegar prevents spoilage of pickles because bacteria cannot live in such an environment.
5. Heat and Cold Treatments
Boiling kills many microorganisms. Low temperature inhibits the growth of microbes.
6. Storage and Packing
Things sealed in air tight packets prevent the attack of microbes.
Naming : 1 Mark each
The different methods of food preservation are as follows
1. Chemical Method
Salts and edible oils are the common chemicals used to check the growth of microorganisms. Sodium benzoate and sodium metabisulphite are common preservatives.
2. Preservation by Common Salt
Meat and fish are covered with dry salt to check the growth of bacteria.
3. Preservation by Sugar
Sugar reduces the moisture content which inhibits the growth of bacteria which spoil food.
4. Preservation by Oil and Vinegar
Use of oil and vinegar prevents spoilage of pickles because bacteria cannot live in such an environment.
5. Heat and Cold Treatments
Boiling kills many microorganisms. Low temperature inhibits the growth of microbes.
6. Storage and Packing
Things sealed in air tight packets prevent the attack of microbes.
