Modern method on how to prevent your food and preservation
The modern preservation method exit which include canning, freezing, bottling heat treatment.these method are science oriented.
It is done in a special factories.in canning air is removed from the can, the content heat thus killing microorganisms and sealed.example of canned food are sardine milk tinned tomatoes corned beef and fruit .
Food crop like tomatoes can be stored by keeping them in a bottle and filling them with sterilized water. Example of food stored and preserved in bottle include fruit drink and food condiment.
Bacteria and mirco organism they spoil food when the temperature is very low. So is good to keep it in deep freezer food and crop do not loose their flavor and value for long time and it will good to use.
Sterilization and pasteurisation of food like milk make food for human consumption by destroying the spoilage micro organism.so make you use the heat treatment so it can help your body.