Abstract: An apparatus for sterilization of thermolabile materials, particularly lacteal, comprising simultaneously subjecting the material to induced internal heating effects and centrifugal force. The internal heating of the product is accomplished by friction arising between the product and a moving surface. The internal heating and centrifugal apparatus of the invention accomplishes sterilization of the product within a fraction of a tenth of a second. The temperature and the centrifugal force to which the product is subjected cooperate to destory microorganisms that may be present, for example, by coagulating the protoplasm of these microorganisms, and by destroying, or at least degrading, the cell walls of the microorganisms.