Flashcards in Properties of Lipids - Emulsions Deck (11)
What is an emulsion?
When two immiscible liquid are forced together
What are the two different types of emulsions?
What are emulsions normally composed of?
Oil in water
Water in oil
Give an example of an oil in water emulsion
Give an example of a water in oil emulsion
What is a permanent emulsion?
An emulsion made when oil and water are forced together permanently in the presence of an emulsifier
Give an example of a permanent emulsion
Mayonnaise = oil and vinegar + emulsifier
What emulsifier is used in mayonnaise?
Lecithin from egg yolks
What is a temporary emulsion?
An emulsion made when oil and water are forced together by shaking
This emulsion is temporary and will therefore separate when left standing
Give an example of a temporary emulsion
French dressing = oil and water + shaking motion