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CHEMIC LS FOR

CONSUMERS

CHEMISTRY

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FOOD ADDITIVES

FOODADDITIVESA natural or synthetic substance

that is added to food to :-

= prevent spoilage

= extend food storage life= improve food appearance

= improve food taste

= improve food texture

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ST BILISERS

Chemicals that are used to enable oil and water in the

food to mix together properly in order to form an

emulsion of oil and water

In other wordsfunction of stabilisers is to stabilise the

dispersion of oil in water.

Examples : gelatin and acacia gum

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Stabilisers are added to improve the texture of food.

Examples : Stabilisers are added to ice creamand

peanut butter to keep them smooth and creamy.

In the presence of stabilisers, the emulsion of oil does

not separate from water. This means that stabilisers

improvesthe stability of some food.

Examples of food : ice cream and salad dressing

(mayonnaise)

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Without stabilisers :

- Ice crystals would form in ice

cream- Particles of chocolate would

settle out of chocolate milk

- Oil and vinegar in salad

dressing will separate as soon

as mixing is stopped

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THICKENING GENTS

Chemicals that are added to food to thicken the liquid and

to prevent the food from becoming liquid.

Thickening agents also called THICKENERS

They absorb water and thicken the liquid in food to produce

ajelly-like structure.

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Most thickening agents are natural carbohydrates.

GELATINand PECTINare added to helpjams and jellies to

set.

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EFFECTS OF

FOOD

ADDITIVES

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Excessive intake of food additives for a prolonged

period will ruin our health.

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RE DING THE FOOD L BEL

Read the label on the food package to identify :-

a) Brand name

b) The net weightc) The halal symbol for Muslim consumersd) The nutrient contente) Food additives usedf) Expiry dateg) Address of the manufacturer

Food additives are usually represented by the code number E.This code number shows that the food additives have beenapproved.