Particles from supercritical fluid extraction of emulsion

A method of producing an aqueous suspension of particles, comprising:

• contacting an emulsion with a supercritical fluid, the emulsion having a continuous aqueous phase and a discontinous non-aqueous phase, the discontinuous non-aqueous phase comprising an organic solvent having a solute dissolved therein, the solute being generally insoluble in the continuous aqueous phase, and the organic solvent being soluble in the supercritical fluid;
• and
• extracting the organic solvent from the discontinous non-aqueous phase of the emulsion and into the supercritical fluid while the supercritical fluid is maintained as a supercritical phase to precipitate particles comprising the solute into the continuous aqueous phase and thereby form an aqueous suspension of particles.