If Manreen grasps the concept of the preservation of quantity, she has now acquired the principle...

If Manreen grasps the concept of the preservation of quantity, she has now acquired the
principle of:

Expert Solution

If Manreen grasp the concept of the preservation of quantity , she has now acqurired the principle of Food preservation or conservation principle

Whwn the availability of food is more than the present use it is preserved for the future consumption . Preservation helps the food to be avilable in off- season and in any place . Delay in the use of fresh alters its freshness , its palatability and its nutritive value hence such food is preserved and use for the long time . Many foods cannot be preserved as such and need some type of treatment .

All food preservation methods are based upon the general principle of preventing or retarding the causes of spoilage - microbial decomposition , enzymatic and non- enzymatic chemical reaction and damage from mechanical causes insects and rodents etc.

PRINCIPLE OF FOOD PRSERVATION ;-

A good method of food preservation is one that slows down or prevents altogether the action of the agents of spoilage . Also , during the process of food preservation , The food should not be damaged . The principle of food preservation arer; ;-

Removal of micro- organisms or inactivating them ;- This is done by removing air , water ( moisture) , lowering or increasing temperature , increasing the concentration of salt or sugar or acid in foods . For the preservation of green leafy vegetables , the water should be removed from the leaves till all the moisture evaporates .

Inactivating enzymes ;- Enzymes found in foods can be inactivated by changing their conditions such as temperature and moisture , One of the methods of preservation of peas is to put them for a few minutes in boiling water . This method inactivates enzymes and thus in preserving the food .

Removal of insects , worms , rats ;- By storing foods in dry , air tight containers the insects , worms or rats are prevented from destroying it .

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