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 :
- Preservatives
- Antioxidants
- Flavourings
- Stabilisers
- Thickeners
- 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
0 orang nak tahu pasal CHEMISTRY:
Post a Comment
jangan lupa tinggalkan komen at sini !