23/09/2021
What are emulsions? 🤔
Liquid dispersed in another immiscible liquid
Emulsions basically consist of a dispersion of two liquids that are immiscible with each other.
or
Emulsions are colloids in which both the dispersed phase and dispersion medium are liquids.
The mixtures of oil and water are the emulsions when are shaken together.
In emulsions, dispersed phase is that liquid which is less in amount and dispersion medium is the one which in large amount. As an example, in oil-in-water emulsion, oil is the dispersed phase,
and water is the dispersion medium.
Types of Emulsion:
Emulsions can be classified on the basis of the properties of
the dispersed phase and the dispersion medium.
1) Oil in water (O/W):
In this type of emulsion, the oil will be the dispersed phase and water will be the dispersion medium. The best example for o/w emulsion is milk. In milk, the fat globules (which act as the dispersed phase) are suspended in water (which acts as the dispersion medium).
2) Water in oil (w/o):
In this type, water will be the dispersed phase and oil will
be the dispersion medium. Margarine (a spread used for flavoring, baking and working) is an example of water in oil emulsion.