Cannabidiol extraction methods

CBD is an active substance (cannabinoid) contained in cannabis. He has been the center of attention in recent years. Indeed, scientists and researchers are increasingly interested in it for its potential virtues.

What is isolated CBD?

CBD isolate or CBD isolate is pure CBD. In other words, the extracted CBD does not contain other cannabinoids , terpenes or flavonoids.

Supercritical CO2 extraction

This is the most used method for CBD extraction, although it is also the most expensive. And for good reason, it requires the use of high-performance machines for reliable results. Thus, it makes it possible to obtain an oil with high concentrations of CBD. In figures, this gives up to 92% CBD.

Supercritical CBD CO2 extraction involves using supercritical carbon dioxide to extract CBD from plant materials. CO2 is subjected to strong temperature variations in pressurized chambers and pumps.

In a room, we put pressurized CO2 and the cannabis plant. The CO2 is pumped from its chamber into the chamber that contains the cannabis in order to decompose the plant and thus separate the oil from the plant matter.

Finally, the oil and CO2 are pumped together into a third chamber. The gas will then evaporate and only the CBD oil will remain.

Oil extraction

CBD extraction can also be done with oil, among others hemp, olive, sesame... In addition to being a natural process, this type of extraction makes it possible to give the oil CBD oil's organoleptic properties.

To extract CBD with oil, you first heat the oil and then filter it through the plant.

The disadvantage of this method is that it can alter the quality of cannabinoids, and therefore reduce their effects. In addition, the product cannot be stored for a long time.

Solvent extraction

With CBD solvent extraction, a solvent is used to separate the CBD oil from the plant materials. The solvent will evaporate leaving only the CBD oil.

Solvent extraction requires a lot of precautions, particularly in the choice of solvent. Indeed, certain products such as butane, petroleum and propane contain toxic residues which could cause cancer if they are not properly eliminated during evaporation.

Ethanol extraction

Ethanol extraction allows CBD oil to be free of any toxic residue. However, it can also extract the chlorophyll contained in the cannabis plant, which will give an unpleasant taste to the CBD oil.

Furthermore, natural solvents do not evaporate well, the CBD extract may have a low concentration of CBD. Which, of course, will have an impact on the quality of the product.

> Méthodes d'extraction du cannabidiol