Food Addditives Flashcards
(28 cards)
Uses of Colourings
-Improve Appearnace
-replace lost colour
satisy consumer expectations
give colour to itherwise colourless foods
Examples of Natural colourings and their uses
Caramel- sauces
Carotene- soft drinks
Examples of arfticial colourings and their uses
Amaranth- blackcurrant products
Tartrazine- soft drinks
Functions of Preservatives
Prevents spoilage by preventing microbial growth
Extends shelp life
Prevents food poisoning
Reduces food waste
Greater variety of food availbale
Examples of natural preservatives and their origin and use
Sugar- Jam
Origin: Beet/Sugar cane
Salt- Bacon
Origin: Rocks/Sea
Examples of artificial preservatives and their origin and use
Sulphur Dioxide- Sausages
Sorbic Acid- Soft fruit/fruit yoghurt
Origin: both made in labs
Functions of Flavourings
Add Flavour to food
Replace flavour lost during processing
Enhance flavour
Examples of natural flavourings with orgins and use
Sugar- Jam
Origin: Sugar Cane
Salt-Cheese
Origin: Sodium Chloride
Examples of artificial flavourings with origins and uses
Ethyl Acetate- Rum flavour
Origin:acid + ethyl alcohol
Amyl Acetate- Pear Flavour
Origin: Tree Bark
Example of a flavour enhancer
Monosodium Glutamate- soups, sauces
Origin: Glutamic acid + an amino acid
Functions of Sweetners
To sweeten food (natural)
Used in low calorie/diabetic food & drinks (artificial)
Sorbitol used in diabetic food (bulk sweetners)
Examples of natural sweeteners with origin and uses
Fructose-Tinned peas
Origin: Fruit
Sucrose- Biscuits
Origin: Sugar beet/Sugar Cane
Examples of artificial sweetners with origin and uses
Aspartame-Diet drinks sweetner
Saccharine- Diet drinks sweetner
Origin: Both from coal tar
Example of bulk sweeteners with use and origin
Soribitol- Diabetic food
Mannitol- Sugar free gum
Origin: Lichens
Functions of Antioxidants
Prevents Oxidation where food is spolied by reacting with oxygen
Examples of natural antioxidants with uses and origins
Ascorbic Acid- Fruit Drinks
Origin: Fruit and veg
Tocopherol- Vegetable Oils
Origin: Nuts and seeds
Examples of artificial antioxidants with uses and origins
BHA- Stock cubes
BHT- chewing gum
Origin: Made in a lab
Functions of physical conditioning agents
Improve texture and consistency of food
Emulsifiers- form emulsions
Stabilisers- stabilise emulsion
Anticaking agents- prevents lumps forming
Humectants- prevents food drying out
Thickeners- improve viscosity
List all Physical Conditioning Agents
Emulsifiers
Stabilisers
Poly-phosphates
Pectin
Humectants
Emulsifiers
Lecithin-Mayonnaise
Origin: eggs
Alginates- Ice cream
Origin: Sea weed
Function- make permanent emulsions
Stabilisers
Carageen- Ice cream
Origin: Sea weed
Guar gum- Confectionary
Origin: Guar Plant
Function- stabilise emulsions by thickening them
Poly-phosphates
Magnesium Carbonate- Salt
Origin: Lab
Function- prevents lumping
Pectin
Used in Jams and Jellies
Origin: fruit cell walls
Function- to set mixtures
Humectants
Honey Glycerine- Confectionary and sweets
Origin: lichens
Function- absorb water vapour from air ad keep foods moist
