SOLVENT EXTRACTION SYSTEM

Clean Green Biosystems offer turnkey solvent extraction system for phyto cannabinoids extraction from dry cannabis material. The solvents shall be ethanol, hexane, chloroform or ethyl acetate.



Alcohol extraction of cannabis has been done for centuries. Cannabinoids have excellent solubility in lower alcohols such as ethanol and isopropanol, provided that the water content of the alcohol is low. Ethanol tinctures of cannabis are a part of the Pharmacopeia, and before prohibition, were readily available for various ailments.


The extraction industry prefers to use ethanol due to its availability, safety in terms of handling and health and it does not require high pressure for extraction. Most interestingly, the extraction with ethanol will yield a full spectrum extract which aids in the synergistic activity of phyto cannabinoids to exert a good pharmacological activity.


Ethanol has both polar and nonpolar parts and therefore dissolves both hydrophilic and hydrophobic molecules. Ethanol’s polar groupdissolves hydrophilic compounds like chlorophyll, pigments and tannins. Whereas Ethanol’s nonpolar groupworks with the hydrophobic components like plant waxes/lipids, oils, cannabinoids, terpenes and any other substance that is present inside or on the outside of the plant.


On an average, cannabis plant buds yield about 12.5 % of extracted concentrate. Since during extraction the buds must be completely covered, the solvent volume to plant mass ratio has to be about 20 or more, which reduces the viability of the process and project as one has to distill out a huge volume of solvent, ethanol.


Whatever the solvent used for extraction, a careful and proper design of a extractor and the extraction process is imperative in the phytocannabinoids extraction industry as to get the maximum yield with maximum cannabinoids without any thermal degradation in the extract. This shall be achieved by playing with the temperature parameters and other physical process steps in extraction.