Dairy Council Northern Ireland

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What is pasteurisation?

Pasteurisation was invented by a French Scientist called Louis Pasteur during the nineteenth century. Pasteur discovered that heating milk to a high temperature and then quickly cooling it before bottling or packaging it could keep it fresh for longer.

Today, the process of pasteurisation is widely used within the food and drink industry, and it is the most common form of heat treatment used on milk within Northern Ireland. Pasteurisation makes sure milk is safe to drink (by killing any bacteria) and also helps to prolong its shelf life.

The process of pasteurisation involves heating milk to 71.7°C for at least 15 seconds (and no more than 25 seconds). Because of the nature of the heat treatment it sometimes referred to as the ‘High Temperature Short Time’ (HTST) process. Once the milk has been heated, it is then cooled very quickly to less than 3°C. The equipment which is used to heat and cool the milk is called a ‘heat exchanger’.

When the milk has been pasteurised it is bottled or packaged to be sold to consumers.

November 25

A huge thank you to Prof Adam Drewnowski @DrAdamDrew and @NICHE for our 31st Annual D…

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November 25

Dairy Council for NI chair, Dermot Farrell gives the ‘vote of thanks’ to Prof Ada…

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November 25

A sustainable diet should be healthy and also affordable but as Prof Adam Drewnowski…

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November 25

Prof Adam Drewnowski emphasises the importance of considering all four domains of sus…

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November 25

We are delighted to have Prof Adam Drewnowski @DrAdamDrew give the 31st Annual Dairy…

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November 25

Prof Sean Strain @NICHE_ULSTER introduces Prof Adam Drewnowski to give the Annual Dai…

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November 25

Prof Carol Curran, Executive Dean, Faculty of Life & Health Sciences @UlsterUni welco…

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November 25

Just a few minutes to go until the Annual Dairy Council Lecture 2020 begins... Prof S…

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November 25

Very much looking forward to the 31st Annual Dairy Council Nutrition Lecture with @NI…

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November 20

RT @JohnBlairMLA: At #SustainabledairyEU virtual farm visit today. Thanks @DairyCounc…

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November 20

And with that, Dr Mike Johnston draws our virtual farm visit to a close and thanks Ja…

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November 20

James says he has grassland that has been down there for 40+ years and is still going…

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November 20

Neville Graham says, "Our carbon outputs per litre have become lower than the Europea…

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November 20

Neville Graham says, "We need to support new entrants to the industry. Farmers are en…

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November 20

RT @Kelmba: Attending Virtual Farm Visit - EU Sustainable Dairy- From Research to Pra…

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From the farm to the fridge, the Dairy Council for Northern Ireland acts on behalf of the dairy industry, promoting the natural goodness and quality of Northern Ireland milk and dairy products.

Our primary function is to communicate factual information to allow individuals to make well informed choices about dairy products that they consume and to inform them of the benefits of including dairy products in a balanced diet. We use a wide range of media, which includes television, radio, press, and social media. Our Advertising is complemented by public relations and promotional activities designed to communicate with specific groups.

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