Page 22 - Science Class 06
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Components of Food
• Nutrients and Their Types • Significance of Health
• Balanced Diet • Roughage
• Diseases and Disabili es Due to Food Deficiencies
Food is a nutri ve substance taken by an Some important types of nutrients are:
organism for growth, work, repair and v Carbohydrates v Fats
maintaining life processes. Food is a kind of
v Proteins v Vitamins
fuel for the living things. Just as petrol is a
v Minerals v Water
fuel for our car, in the same way, food is a
fuel for our body. Carbohydrates
Carbohydrates are the compound made up
We must eat food that provides us energy is
of three elements— carbon, hydrogen and
known as staple food. The study of
oxygen. Propor on of hydrogen and oxygen
composi ons of food materials and the
being the same as in water, the term
quan es of food materials required by our
carbohydrates actually means hydrates of
body for growth, maintenance and survival
carbon. Glucose, sucrose and starch are
is called nutri on. A nutrient is an organic
examples of carbohydrates. Carbohydrates
or inorganic substance required for the
are the main source of energy in our body.
survival of a living being. Though carbohydrates are not the richest
NUTRIENTS AND THEIR TYPES source of energy, they are the cheapest
source of energy. Carbohydrates produce
Nutrients are the elements of food that help
energy when they are oxidized in the body.
our body in maintaining life processes.
One gram of carbohydrates produce
Nutrients are also called the components of kilojoules of energy and about 60 percent to
food. 80 percent of the total energy contained in
22 Science-6
