Emulsifiers

Question 0

Why add additives to food? (3)

Answer 0

Improve flavour, colour, last longer

Question 1

What does an emulsifier do?

Answer 1

Make oil and water mix without separating

Question 2

Name the 4 different types of food additive and their jobs

Answer 2

Food colour - appealing
Flavour enhancer - bring out taste and smell
Antioxidants - preserve
Emulsifiers - blend oil and water

Question 3

What do you call a mix of oil and water?

Answer 3

Emulsion

Question 4

What is an emulsion made up of?

Answer 4

Droplets of one liquid SUSPENDED in another

Question 5

Why do we need emulsifiers?

Answer 5

Oil and water naturally SEPARATE, emulsifiers stop this

Question 6

Give 3 examples of food that need emulsifiers

Answer 6

Ice cream
Mayonnaise
Low fat spread

Question 7

What are emulsifiers made up of?

Answer 7

Molecules with one part attracted to water (Hydrophilic), one part attracted to oil (HydroPHOBIC)

Question 8

What happens when you shake oil, water and emulsifier?

Answer 8

Oil forms droplets, surrounded by coating of emulsifier with hydrophilic bit facing outwards.
Other oil droplets are repelled and water molecules latch on.
Emulsion won’t separate out.