What You Need to Know
Rotary evaporation uses a reduced pressure (0.1–1 atm) and gentle heating (40–80 °C) to evaporate the solvent from a flavor extract. The solvent is removed in a rotating vessel that increases surface area, while a condenser recycles the vapor back to the liquid phase. This process concentrates volatile aroma compounds without exposing them to high temperatures that would cause degradation.
The Science
Primary Reaction
solvent evaporation under reduced pressure