Colourings Flashcards
What are the functions of colourings?
3
Improve the colour of foods
Replace colour lost during processing
Add colour to colourless food
Give an example of where colourings are used to improve the colour of foods
Soft drinks
Give an example of where colourings are used to replace colour lost during processing
When peas are canned they change from bright green to olive green
Give an example of where colourings are used to ass colour to colourless foods
Ice pops
What are the two categories of colourings?
Natural
Artificial
Give four examples of natural colourings
Chlorophyll
Carotene
Caramel
Cochineal
What colour is chlorophyll?
Green
What colour is carotene?
Yellow/orange
What colour is caramel?
Brown
What colour is cochineal?
Red/crimson
What is the origin of chlorophyll?
It is the green pigment found in plants
What is the origin of carotene?
Carrots
What is the origin of caramel?
Heated carbohydrates
What is the origin of cochineal?
Dried and ground cochineal beetles
Give a use of chlorophyll as a colouring
Green-coloured fruit gum sweets
Lime-flavoured jelly
Give a use of carotene as a colouring
Orange-coloured soft drinks
Orange-coloured fruit gum sweets
Give a use of caramel as a colouring
Gravy powder/granules
Cola-flavoured soft drinks
Give a use of cochineal as a colouring
Processed meat such as sausages
Pink-coloured fruit gum sweets
Give four examples of artificial colourings
Tartrazine
Sunset yellow
Ponceau 4R
Green S
What colour is tartrazine?
Yellow
What colour is ponceau 4R?
Red
What is the origin of all artificial colourings?
Coal tar
What is coal tar?
A black, thick, opaque liquid obtained from the distillation of coal
Give a use of tartrazine as a colouring
Orange-coloured fruit drinks
Give a use of sunset yellow as a colouring
Yellow/orange coloured soft drinks
Give a use of ponceau 4R as a colouring
Red-coloured soft drinks
Give a use of green S as a colouring
Canned peas
