Friday, 27 January 2012

...FOOD ADDITIVES..


First  of  all,  look at this... :: a food additive is a natural or synthetic substance which is added to food.

This is due to : - improve the taste, texture or appearance of a food.
                       - preserve and extend food storage life.
Food additives that commonly used are :

  1. Preservatives
  2. Antioxidants
  3. Flavourings
  4. Stabilisers
  5. Thickeners
  6. Dyes or colouring

USES OF FOOD ADDITIVES

PRESERVATIVES


- to slow down or prevent the growth of bacteria or fungi, so that the foo can be kept longer
- freezing & refrigeration are alternative ways to preserve meat instead using nitrite & nitrate


ANTIOXIDANTS


- to prevent oxidation that causes rancid fats and brown fruits
- this situation occurs when an apples or potatoes will turn br0wn when exposed to the air

FLAVOURING


- used to improve the taste or smell of food & restore taste loss due to food processing
- salt, sugar & vinegar are natural flavouring

STABILISERS


- stabilisers helps to mix two liquids that usually do not mix together (formed emulsion)
- emulsion is either oil droplets suspended in water or water droplets suspended in oil.

THICKENERS
( starch )
- substances that thicken food and give the food a firm, smooth and 
uniform texture

DYES OR COLOURINGS

( kordial )
- used to add or replace colour lost during food preparation
- to make food look attractive








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