The basic principle of the high pressure extraction process is the fact that gases in fluid state are able to dissolve larger quantities of natural substances than the partial pressure of the substance in the solvent would normally permit.
ADVANTAGES Gentle treatment of heat-sensitive materials Solvent-free products covering all legal requirements Fragrances and aromas remain unchanged Selective extraction and fractionated separation Simple solvent recovery CO2 as solvent does not cause environmental problems and is physiologically harmless, germicidal and not flammable. Pure extracts resulting from few process steps, marking the quality standard and meeting the market trends.
PROCESS DESCRIPTION Liquid CO2 from the storage is pressurized, heated and transferred to the extractor, where the solvent gets loaded according to adjusted conditions. A change of these-conditions (pressure, temperature) causes precipitation of the dissolved substances in the separation vessels. The now gaseous CO2 is condensed, intermediately stored and recycled again.
