A METHOD OF RECOVERY OF ORGANIC SUBSTANCES FROM AQUEOUS MEDIA BY FREEZE-OUT EXTRACTION UNDER THE ACTION OF A CENTRIFUGAL FORCE

摘要

The invention can be used for isolating organic substances from aqueous media, water-containing biological fluids and aqueous extracts/infusions. The embodiment of the method involves extracting organic substances from an aqueous medium with an organic solvent while performing freezing-out under the action of a centrifugal force. In order to produce an extract of the organic substances of interest, a suitable organic solvent, miscible or partially miscible with water, is added to the sample and isolated into a separate liquid phase in the process of freezing the water portion during centrifugation. The method makes it possible to improve the reproducibility of the extraction results with regard to the amount of the extract produced, to reduce the amount of the extracting agent in the extraction system, and to reduce the water content in the extract produced. 10 examples are provided.