date:Feb 25, 2019
ction processes use supercritical CO2. Essentially, the pressure acts the same way a solvent would act without the disadvantages of using a solvent (certain solvents, such as butane, have shown safety implications with chronic use and overexposure3). Hemp CBD can be extracted from subcritical CO2 extraction, but this is unusual because of the lower yields of CBD in subcritical CO2.
Lipid extraction
Another less common, but solvent-free, extraction method is lipid extraction, where a fat (often