Question

what is pasteurization who started it ?and when year

Answer 1

Pasteurization or pasteurisation is a process that kills microbes in food and drink, such as milk, juice, canned food, and others. 

started by.... Louis Pasteur in 1939

Answer 2

Pasteurization is a process in which a liquid is heated up so as to kill microbes or pathogens or any harmful microorganisms that can be dangerous and can harm us.

Louis Pasteur started it and it is named after it.

It was started by him in nineteenth century.
Hope that helps. ...