Freezing

In freezing, food temperature is reduced to about -20oC 

           

Freezing turns water in food to ice. Water is unavailable for reactions to occur, and for micro-organisms to grow 

Examples: Frozen meat, peas, vegetables, ice-cream

Common food preservation techniques
Heat Treatment|Irradiation|Drying and Dehydration
Refrigeration|Freezing|Canning
Sugaring|Salting|Meat-curing
Pickling in vinegar|Use of food additives|Smoking