supercritical fluid extraction

Supercritical fluid extraction is a method of separating valuable compounds from materials using a fluid at a temperature and pressure above its critical point, where it exhibits both liquid and gas qualities. Carbon dioxide is commonly used because it easily becomes supercritical, effectively dissolving certain substances like flavors, fragrances, or plant oils without leaving harmful residues. After extraction, reducing pressure allows the fluid to return to a gas, leaving the extracted compounds behind. This is a clean, efficient technique often employed in food, pharmaceuticals, and cosmetics for pure, high-quality extracts.