Description
A solvent‑free method that uses supercritical CO₂ to extract aromatic compounds from plant materials.
Technical
Supercritical CO₂ behaves as a tunable solvent, with density and solubility adjustable by pressure and temperature. At temperatures above 31.1 °C and pressures above 73.8 bar, CO₂ enters a supercritical phase that dissolves non‑polar aromatics while remaining chemically inert. The extracted compounds are recovered by depressurizing the CO₂, leaving a solvent‑free aromatic extract.
Science
Primary Reaction
Physical dissolution and phase separation
Sensory Profile
Aroma ()
floralcitrusherbalspicysweet
Origin & History
Civilization
Modern industrial food and fragrance sector
Era
21st century