SUBJECT - SCIENCE

TOPIC - FOOD AND ADULTERATION

STANDARD - XTH

NAME - SMITA S. DOIPHODE

ROLL NO. - 11

B.ED 2010-11

FOOD & ADULTERATION

Food Adulteration

What is adulteration? Common adulterates Harmful effects of adulteration Chemical test for identification of Adulteration

FOOD

Definition :- Food can be defined as a Substance

that can be consumed metabolized & assimilated by an organism produce energy stimulate growth & maintain life.

ELEMENTS OF FOOD

Nitrogen Oxygen Hydrogen Sulphur etc.

Food is essential as it provides energy for various life processes

ADULTERATION

Simple definition:Reducing the purity of an article by the

addition of a foreign or inferior substance

Act of intentionally debasing the quality of food offered for sale either by admixture or substitution of inferior substances or by the removal of some valuable ingredient.

The food may get adulterated bypesticides and chemicals.

Intentionally : Substances added in food to improve

appearance, flavour, texture or storage properties (food additives)

Unintentionally :Pesticides, growth promoters,

components of packaging materials, solvents and enzymes used in food processing etc.

INTENTIONAL ADULTERATION

CHEMICAL CONTAMINANTS

CHEMICAL CONTAMINANTS

• Chemical non-nutritive substances are added intentionally to food, generally in small quantities to improve its appearance, flavor, texture or storage properties. They are called food additives.

• Pesticides are used to protect the crops from insect-pests and by increasing the yield.

• Fertilizers are used to provide nutrition to plant and hence increasing production.

• Pesticides are toxic substance and may pose variety of adverse effects if used indiscriminately.

COMMON ADULTERATES Addition of chalk to flour

Added water can be an adulterant

Addition of colors to disguise poor quality

Snails added to milk to make more “frothy”

Addition of sand to brown sugar and rice to make

heavier

Addition of sand to brown sugar and brown rice

EVALUATION

Q1. Why food is essential for living beings?Ans. Because it provides energy.

Q2. Name some elements of food?Ans. Oxygen, hydrogen, nitrogen.

Q3. What is adulteration?Ans. Reducing the purity of an article by the

addition of a foreign substances

Q4. What are the types of adulteration?Ans. Intentionally and unintentionally

Q5. Name some common adulterants?Ans. Chalk in flour, water in milk, etc.