Supercritical CO₂- Extraction:

Supercritical CO₂- Extraction: Pressure up to 1,000 bars open new horizons

Most of the commercial production plants work at moderate pressures lower than 300 bars. The design pressure is limited to approx. 500 bars because equipment costs augment disproportionaly with raising pressure. From literature is well known that with ascending pressure density as well as the dielectric constant of CO2 are increasing thus the solubility for different components is rising. Through the change of interactions at higher pressures molecules, which are difficult to dissolve at lower pressures will be allowed to be extracted. Therefore there is a chance for extraction of high grade and expensive specialities, like food additives and raw materials for the production of Functional Food.

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