CO2 can be used in super-critical and sub-critical extraction but super-critical is more widely used.
CO2 can be used in super-critical and sub-critical extraction but super-critical is more widely used.
Super-critical fluid is a substance between gas and liquid, existing only when temperature and pressure exceed the critical point. The density of super-critical fluid is similar to that of liquid, whereas its viscosity is closer to that of air
Subcritical fluid are substances with temperature above the boiling point but below the critical temperature and pressure below critical point
Distillation is a common method used in chemistry to separate mixtures. With different solubility or distribution coefficient of solvents, compounds can transferred from one solvent to another. Ethanol is competitive for extraction.
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