Pro extrakci lze použít pouze tato rozpouštědla: methanol, ethanol, aceton, hexan, dichlormethan, ethyl-acetát, propan-2-ol a oxid uhličitý.
Only the following solvents may be used in the extraction: methanol, ethanol, acetone, hexane, dichloromethane, ethyl acetate, propan-2-ol and carbon dioxide.