preparation of volatile oil

There are four methods are available for the extraction of volatile oils from plants parts. this method are- 

1)Distillation

-  water distillation

-  water and steam distillation

- direct steam distillation

2) Expression

3) extraction with volatile solvents.

4) adsorption in  purified fat

 now I  discuss about it.

 water distillation

First the plant parts have to be dried.Then they should be cut into small pieces and kept in the distillation chamber with water as required.Then it has to be heated. When volatile oils come out with water,Then the volatile oils have to be separated by layer separation method.

Direct steam distillation

In this process the oily fresh plant components are cut into small pieces and placed directly on a truck bed in a metal distilling tank.

And the steam is driven. As a result, volatile oil evaporates from the inside of the fresh plant and enters the containing chamber.

Here the steam cools and becomes liquid again.

adsorption in  purified fat

Take the fat in a thin layer on a glass plate and then spread the flower petals and leave it for a few hours. After doing this a few times, when the volatile oil becomes adsorbed in the fats, the fats should be removed and soaked in alcohol. As a result, the volatile oils on the fat will dissolve in the alcohol. And lastly, the volatile oils have to be separated in the separation method.