Food

Food : Food is a composite mixture of substances which when consumed performs certain functions in the body.

Food stuff :

            Anything which can be used as food.

Proximate principles of food:

1. Proteins,

2. Fats, and

3. Carbohydrates.

Constituents of food:

1. Proteins

2. Fats

3. Carbohydrates.

4. Vitamins

5. Minerals, and

6. Water.

Function of food:

1. Yields energy

2. Helps in building and maintaining the body

3. Protects the body from various diseases

4. Regulates the tissue functions

Classification of foods : Foods are classified in different ways. 

1. Classification by predominant function

i. Energy yielding foods : These are foods rich in carbohydrate         and fat, e.g., cereals, sugar, roots, tubers, rice, wheat, potatoes etc.

 ii. Body building foods : These are foods rich in

 proteins,  e.g. egg, meat, milk, liver, fish, pulses,

oilseed cakes.

2. Classification by origin :

                                I.            Foods of animal origin

                             II.            Foods of vegetable origin.

3. Classification by chemical composition.

i. Proteins

ii. Fats

iii. Carbohydrates

iv. Minerals.

           

4. Classification by nutritive value :

i. Cereals and millets.

ii. Pulses (legumes) and etc.

iii. Vegetables

iv. Nuts and oilseeds

v.  Fruits

vi. Animal foods

vii. Fats and oils

viii. Sugar and jaggery