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Pasteurized milk in Japan A 1912 Chicago Department of Health poster explains household pasteurization to mothers.. In food processing, pasteurization (also pasteurisation) is a process of food preservation in which packaged foods (e.g., milk and fruit juices) are treated with mild heat, usually to less than 100 °C (212 °F), to eliminate pathogens and extend shelf life.
A Tetra Pak ultra-pasteurization line. Ultra-high temperature processing (UHT), ultra-heat treatment, or ultra-pasteurization [1] is a food processing technology that sterilizes liquid food by heating it above 140 °C (284 °F) – the temperature required to kill bacterial endospores – for two to five seconds. [2]
Flash pasteurization, also called "high-temperature short-time" (HTST) processing, is a method of heat pasteurization of perishable beverages like fruit and vegetable juices, beer, wine, and some dairy products such as milk. Compared with other pasteurization processes, it maintains color and flavor better, but some cheeses were found to have ...
As milk is heated during pasteurization many of the proteins in the milk are denatured. Pasteurization temperatures can reach 161 °F (71.7 °C). This temperature is high enough to denature the proteins below, lowering the nutritional value of the milk and causing fouling.
Pulsed electric field (PEF) electroporation is a method for processing cells by means of brief pulses of a strong electric field. PEF holds potential as a type of low-temperature alternative pasteurization process for sterilizing food products. In PEF processing, a substance is placed between two electrodes, then the pulsed electric field is ...
At this temperature, bacteria are killed, enzymes in the milk are destroyed, and many of the proteins are denatured. [2] Since most milk sold today is pasteurized , which accomplishes the first two goals, milk is typically scalded to increase its temperature, or to change the consistency or other cooking interactions by the denaturing of proteins.
Alicyclobacilli are strictly aerobic, acidophilic, mesophilic to thermophilic, soil-dwelling organisms. [2] Alicyclobacilli are of special interest to the fruit juice canning industry because common pasteurization techniques (92 °C for 10 seconds) do not deactivate the spores; [3] Alicyclobacillus species can have a D 95-value of over 8 minutes (requiring treatment of over 8 minutes at 95 °C ...
Cold pasteurization may refer to: . Pascalization, a method of preserving and sterilizing food, in which a product is processed under very high pressure; Food irradiation, exposing foodstuffs to ionizing radiation to preserve food, reduce the risk of food borne illness, prevent the spread of pests, delay or eliminate sprouting or ripening, increase juice yield, or improve re-hydration