Extraction type

Rectification is a form of fractioning, coarser than fractional distillation, that separates the odor molecules of an essential oil that have very different boiling temperatures. The odorant compounds of the essential oil pass one after the other int ...
Hydrodistillation is a very old technique that is said to have been used since ancient times by the Persians to make rose water. The etymology of the word attests to its traditional use: hydro is Greek for “water” and “distillation” comes fro ...
Enfleurage techniques are traditional, but they became widespread in Grasse starting in the 18th century. It is a process that makes it possible to recover the odor compounds from fresh and fragile flowers using fats. There were two enfleurage techni ...
An infusion or tincture is a solution obtained from the maceration of a natural raw material in ethanol – hot or cold – for several hours or several weeks so as to recover the odorant compounds. The plant debris is then removed while ethanol is u ...
Volatile organic solvent extraction is a process that was only developed on an industrial scale in the 19th century in Grasse. It is an alternative to the enfleurage technique that was very widespread at one time. This method entails placing the natu ...
Supercritical CO2 extraction entails treating a botanic natural aromatic raw material with CO2 in the supercritical state. In this state, CO2 has the viscosity of a gas and the density of a liquid, which makes it an effective solvent. Supercritical C ...
Fractional distillation is the process of finely separating, in a vacuum, the odorant molecules of an essential oil having close boiling temperatures. The scent compounds of the essential oil distil one after the other in the column and are then coll ...
Molecular distillation is fractional vacuum distillation. The odor molecule contact time is very brief, which prevents heat degradation. This method is widely used to remove the color from extracts. Our New Caledonian clear sandalwood absolute is an ...
Dry distillation, unlike hydrodistillation and steam distillation, uses no added water or steam. This distillation method is little used. The rare essential oils produced using dry distillation are cade and birch. Rectification is often necessary to ...
Steam distillation is a very old technique, like hydrodistillation. It entails recovering the essential oil contained in the plant cells through use of hot water vapor. The natural aromatic raw material is put into a still into which is injected stea ...
Cold-pressed extraction is a mechanical process to recover the essential oil contained in the skin (or epicarp) of citrus fruits. This technique is specifically reserved for citrus due to where their essential oils are stored. It was introduced in It ...