Preservation Techniques Used
Homogenised
Homogenisation is the process by which milk butterfat is broken down into tiny particles by forcing the milk through nozzles at very high pressure.
Ultra Heat Treatment
UHT milk is also called sterilised milk or long-life milk. 'UHT' means ultra-heat treated. During this process, milk is heated to about 132 degrees Celsius and then cooled quickly and stored in containers.
Sterilization
Sterilization is the term applied to a heat treatment process which has a bactericidal effect greater than pasteurization. Although it does not result in sterility, it gives the processed milk a longer shelf life. This is achieved partly by using a more severe heat treatment (about 110°C for 20–30 min) and partly by applying the treatment after the bottle is filled and sealed which eliminates the risk of contamination during packaging.
Aseptic Processing
Aseptic processing is the process by which a sterile product is packaged in a sterile container in a way that maintains sterility.Aseptic food preservation methods allow processed food to keep for long periods of time without preservatives, as long as they are not opened. The aseptic packages are typically a mix of paper (70%), polyethylene (24%), and aluminum (6%), with a tight polyethylene inside layer.Together the materials form a tight seal against microbiological organisms, contaminants, and degradation, eliminating the need for refrigeration.
Homogenisation is the process by which milk butterfat is broken down into tiny particles by forcing the milk through nozzles at very high pressure.
Ultra Heat Treatment
UHT milk is also called sterilised milk or long-life milk. 'UHT' means ultra-heat treated. During this process, milk is heated to about 132 degrees Celsius and then cooled quickly and stored in containers.
Sterilization
Sterilization is the term applied to a heat treatment process which has a bactericidal effect greater than pasteurization. Although it does not result in sterility, it gives the processed milk a longer shelf life. This is achieved partly by using a more severe heat treatment (about 110°C for 20–30 min) and partly by applying the treatment after the bottle is filled and sealed which eliminates the risk of contamination during packaging.
Aseptic Processing
Aseptic processing is the process by which a sterile product is packaged in a sterile container in a way that maintains sterility.Aseptic food preservation methods allow processed food to keep for long periods of time without preservatives, as long as they are not opened. The aseptic packages are typically a mix of paper (70%), polyethylene (24%), and aluminum (6%), with a tight polyethylene inside layer.Together the materials form a tight seal against microbiological organisms, contaminants, and degradation, eliminating the need for refrigeration.