ester by volume with sorbent solvent ratio of 1 1 to isolate polyprenols the method includes the following sequence of operations and procedures plant raw material u2014 green conifer needles and foliage of deciduous species birch ginkgo biloba u2014 is extracted by organic solvent with subsequent treatment of the obtained extractive compounds by an aqueous solution of naoh with obtaining of salts of higher fatty acids resin and chlorophyllin acids water alkaline phase as well as of neutral compounds unsaponifiable under the conditions of the performed process compounds soluble in organic solvent the solution of salts of resin higher fatty and chlorophyllin acids is treated using an aqueous solution of mineral or organic c 1 c 3 acid with solution density of 1 100 1 200 kg 3 with addition of water immiscible organic solvent heating of the mixture to 55 65 u00b0 c while mixing phases the solution is kept at the given temperature for at least 3 hours without mixing the layer of organic solvent with higher and resin acids is drained or siphoned off the organic solvent is added again and heated with mixing settled for at least 3 hours the organic solvent with remainder of higher and resin acids is siphoned or drained off once again after separation of the layer containing organic solvent with dissolved acids the aqueous solution with dissolved sodium salt is poured off remaining chlorophyllin acids insoluble in water and organic solvent are treated by live steam for.