The development of pasteurization as a method to destroy pathogenic bacteria in food and drink and, therefore, aid in food safety, dates back to the 19th century. However, the origins of heating (rather than cooking) food and drink for the purposes of preservation go back to China in the 12th century, where the technique was used to keep wine fresh and drinkable. 

EnWave Corp., Vancouver, British Columbia, has signed an agreement with Gay Lea Foods Cooperative Ltd., a leader in the production and processing of dairy products in Canada.