Freeze concentration or cryoconcentration is a method for recovering a food solute from a solution based on the separation of pure ice crystals from a freeze-concentrated aqueous phase. As compared to evaporation and membrane technology, freeze concentration has some significant potential advantages for producing a concentrate with high quality because the process occurs at low temperatures where no vapor/liquid interface exists resulting in minimal loss of volatiles.
Thus, the flavor and quality of freeze-concentrated products are exceptionally high, especially relative to their counterparts produced by evaporation (Morison & Hartel, 2007).