Device and method for sterilizing an emulsion at an ultrahigh temperature, particularly a cosmetic emulsion for the skin, which is unstable at the sterilization temperature
The invention relates to a method for sterilizing an emulsion at an ultrahigh temperature, particularly a cosmetic preparation for the skin, characterized in that it includes the steps of: a) gradually preheating (120) said emulsion to a preheating temperature T1, which is the stability limit for said emulsion； b) carrying out ultrahigh-temperature sterilization by infusing the thus-preheated emulsion, including i) rapidly heating (131) the emulsion to a sterilization temperature T2； ii) maintaining (132) said emulsion at the sterilization temperature； and iii) rapidly vacuum-cooling (133) the emulsion to a final sterilization temperature T3； and c) gradually cooling (150) the emulsion, while agitating same, to a storage temperature T4.
