(redirected from pasteurisation)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


(păs'cho͝orĭzā`shən, –rīzā`shən), partial sterilization of liquids such as milk, orange juice, wine, and beer, as well as cheese, to destroy disease-causing and other undesirable organisms. The process is named for the French scientist Louis PasteurPasteur, Louis
, 1822–95, French chemist. He taught at Dijon, Strasbourg, and Lille, and in Paris at the École normale supérieure and the Sorbonne (1867–89).
..... Click the link for more information.
, who discovered in the 1860s that undesired fermentation could be prevented in wine and beer by heating it to 135°F; (57°C;) for a few minutes. Milk is pasteurized by heating it to about 145°F; (63°C;) for 30 min or by the "flash" method of heating to 160°F; (71°C;) for 15 sec, followed by rapid cooling to below 50°F; (10°C;), at which temperature it is stored. The harmless lactic acid bacteria survive the process, but if the milk is not kept cold, they multiply rapidly and cause it to turn sour.



the heating of liquids or foods generally to a temperature of 60°-70°C for 15–30 min. In the process, nonspore-forming bacteria are destroyed, but complete sterilization does not result since bacterial spores can withstand such heating. Proposed by L. Pasteur, the method is mainly used to preserve food products that cannot tolerate heating to higher temperatures.

Milk, wine, beer, and other beverages and various foods are pasteurized on an industrial scale. It is recommended that once they are pasteurized, they be kept at a low temperature in order to prevent the germination of bacterial spores.

A related process is fractional sterilization, or tyndallization. After routine pasteurization, the product is cooled and kept for some time at room temperature. When the surviving spores begin to germinate, the product is pasteurized again. Pasteurization is sometimes repeated three or four times.

Milk, cream, juices, and other beverages are pasteurized in centrifugal, tubular, or lamellar pasteurizers. The product is quickly and briefly heated to comparatively high temperatures (up to 100°C) as it continuously flows in a thin layer between the heating surfaces. It is then poured into hermetically sealed containers. Foods that are already bottled or canned are pasteurized by heating with steam while the containers are constantly rotated. Pasteurization of already packaged products using high-frequency sources of heat is a promising development.


(science and technology)
The application of heat to matter for a specified time to destroy harmful microorganisms or other undesirable species.
References in periodicals archive ?
Pasteurisation temperature showed a near constant effect on colour while pasteuriastion temperature and time showed marginal effect (p=0.
The biotechnology is the first economical method for the pasteurisation of eggs in bulk.
The EBI 10 logger can be used for routine checks during pasteurisation and sterilisation of all food, which is subject to a heat process, F-value calculation in food production, or validation of processes in food production and development
In the pasteurisation field temperatures up to 110[degrees]C and counter-pressure between 0.
Part I Dairy product safety and quality: The major constituents of milk; Influences on raw milk; Good hygienic practice in milk processing; Improvements in the pasteurisation and sterilisation of milk: Modelling the effectiveness of pasteurisation; Flavour generation in dairy products; Controlling the texture of fermented dairy products: the case of yoghurt; Factors affecting the shelf-life of milk and milk products; Testing the authenticity of milk and milk products: Functional dairy products; Developing and approving health claims for functional dairy products.
It will carry out pasteurisation duties on a full range of ice cream mixes and, in addition, is expected to undertake pasteurisation on the new, higher viscosity ice cream mixes for the lower fat products.
The Tetra Therm Aseptic Drink is a process module designed specifically for the pasteurisation of juices and other juice based beverages.
The Tetra Therm[R] Aseptic Sensa from Tetra Pak was recently launched to revolutionise the blending and pasteurisation of fruit juices and nectars.
A complete new separation, standardisation and pasteurisation line, for the treatment of yoghurt milk, has been supplied and commissioned in conjunction with Muller Dairies by Tetra Pak Processing.
The first was commissioned in March 2002 and is undertaking pasteurisation duties for Brtivic's soft drinks brand 'Tango.
The PUM's data logger from JDL is a new instrument that enables the user to monitor the pasteurisation process and prevent overheating.
This Campden manual highlights the different types of treatment that include pasteurisation and provides practical guidelines for the safe manufacture of pasteurised products.