Essential Oil Distillation Method
For separating the Essential Oil, steam is flowed through the plant material which helps in vaporizing the compounds that are temperature sensitive and soluble in water. This process helps in getting mixture of vapors and essential oil which is later sent to condensing apparatus. Here, essential oil in liquid form is obtained and separated with the help of Florentine Separator. Steam distillation is widely preferred to retain fine aromas which are impossible or very tough to get from our distillation processes.
Solvent Extraction Method
The plant extract is kept in a tray and rinsed with a layer of solvent for dissolving fragrant compounds. To make the solvent penetrate the plant material completely, spinning or physically breaking up the plant in a rotating drum is suggested. The obtained mixture is later filtered to separate the plant extract and eliminate excess solvent. The result of this procedure is a dense material called “concrete’ which has main fragrant compounds belong to the plant and also a variety of different lipid soluble compounds. The concrete is processed later with a different solvent (an ethanol similar with alcohol). After the second round of vacuum distillation which is done to separate the solvent of absolute remains. Jasmine and Vanilla are the most common absolutes which are extracted by this method which is preferred for producing rich and authentic fragrances absolute.