Sterilization and Aseptic Packaging of Milk Products

teurizers (1). I f these various precautions are not sufficient to produce a satisfactory steam supply, the alternative is the production of culinary steam from potable water, using the unsatisfactory primary steam supply as a source of heat. The 3A recommended practice just referred to includes a sketch of the recommended location of the parts necessary for such an installation. The other alternative in cases of unsatisfactory steam supplies is to accomplish UHT treatment with indirect heat exchanger only. This is the only system possible where direct steam injection is specifically prohibited. In summary changes during UHT sterilization or subsequently in addition to bacterial destruction may include: a) several kinds of flavor changes, b) alkaline phosphatase reactivation, c) serum protein denaturation, d) fat agglomeration and solids destabilization, e) freezing point depression (direct steam injection and deaeration), f) possibility of adulteration with condensate and boiler compounds (direct steam method), and g) partial loss of some vitamins may or may not occur.