In Latin it is where we can find the etymological origin of the term emulsion that now concerns us. Exactly it is the result of the sum of several lexical components of this language such as the following:
-The prefix "ex-", which means "out."
-The verb "mulsus", which can be translated as "milking"
-The suffix "-sion", which is used to indicate "action and effect".
Starting from all of the above, we can point out that emulsion means "mixture of liquids that are not soluble in each other naturally."
In the field of chemistry, the emulsion is called dispersion of one fluid in another with which it cannot be mixed .
For an emulsion to be generated, therefore, two liquids are needed that don't be miscible (mixable). By combining both substances, one of them is dispersed in the other, obtaining a result with a certain homogeneity . A typical example of emulsion is the combination of oil and water.
In the context of the kitchen In fact, emulsions are quite frequent. The Mayonnaise , also known as mayonnaise , is an emulsion that is formed by beating oil and egg, also adding other ingredients such as lemon juice and salt.
Another popular emulsion is the pink sauce or cocktail sauce , consisting basically of mayonnaise and ketchup (although you can add cognac, orange juice or other products ).
Emulsions can be formed differently. In some cases, the particles of their components melt and give rise to a kind of layer. In other situations, the particles may concentrate at a specific place in the mixture (such as the bottom or surface) or even develop a dough .
In the field of Photography On the other hand, an emulsion is called an gelatin silver bromide suspension which constitutes the layer of photographic material that is sensitive to light. Photographic emulsions imply that crystals that have sensitivity to luminosity are distributed along the gelatin in question.
In addition to all of the above, we cannot ignore the existence of what is known as epicutaneous emulsion. Under this name is the mixture of sweat, sebum and dead cells that come to coat what is the skin.
Specifically, there are two types of epicutaneous emulsion depending on the type of skin in question. Thus, in the first place, we come across the so-called O / A, where it is established that there is more water than oil, which is what occurs in normal, dry, non-oily or dehydrated skin, for example.
Secondly, there is the so-called A / O, which indicates that there is more oil than water. Specifically, it appears in what are mixed, oily and oily skin.
There are also the so-called asphalt emulsions that are the result of mixing water and asphalt. They turn out to be odorless, they are cast at less than 100º and it should be noted that they can be used as waterproofing covers.