Food Preservation

Food Preservation

8.2

Food Preservation

	Food Preservation

	Food preservation is a method of food processing that can prevent or slow down the life process of microorganisms

Food that are preserved will last longer

Food Preservation

Methods of Food Preservation	Explanation
Boiling	Process of heating food at a high temperature Example of food is rendang
Drying	Foods can be dried under sunlight or smoked with hot air to eliminate or remove water from the food Examples of foods are fish, prawns and squids
Pickling	Method that uses concentrated salt solution, sugar solution or vinegar to make the reproduction of microorganisms difficult The concentrated sugar solution prevents the growth of microorganisms Examples of foods are vegetables and fruits
Vacuum Packing	Method where air is removed from the pacakaging container Bacteria cannot grow and reproduce since there is no air Examples of foods are fruits and sausages
Freezing	Process of keeping the food at freezing point or lower Examples of foods are fish, chicken, meats and squids
Cooling	Process of keeping the food in the surrounding temperature below 18 degree celsius Low temperatures cause the microorganisms to be less active and slow to grow and reproduce Examples of foods are fruits, eggs and milk
Salting	Process of removing moisture and prevent the growth of microorganims Examples of foods are fish, vegetables and eggs
Waxing	Process of coating fruitys or vegetables with a very thin layer of liquid wax Examples of foods are fruits and vegetables
Smoking	Process of drying the food with smoke for a long period of time Examples of foods are meat and fish
Pasteurisation	Process of heating food to a certain temperature for some time and followed by rapid cooling Examples of foods are milk and fruit juice
Canning and Bottling	Method of heating the foods at high temperature to kill the bacteria and fungi then the can or bottle is closed tightly to prevent the germs from entering Examples of foods are meats, fruits and vegetables

Importance of Food Preservation Technology

	The food are easy to keep and can be brought anywhere Seasonal fruits can be enjoyed through out the year Canned foods can overcome the problem of food supply during an emergency Some foods that are produced by a country can be enjoyed in other countries