What Happens to Milk When It’s Pasteurized?

If you look at a container of milk, you’ll find that the milk is pasteurized.

This process was named after French scientist Louis Pasteur, who invented it. Pasteurization kills any bacteria that might be present in milk, and assures that it will be wholesome.

How is milk pasteurized? It’s simply heated. Pasteur found that if milk is heated to a certain temperature, no bacteria can survive in the milk.

There are two ways to pasteurize milk. One is to heat it to at least 143° F. for 30 minutes, and the second is to heat it to 160° F. for at least 15 seconds.

In the United States, milk was first pasteurized in 1895, in New York City. Today, all milk that is sold in stores is first pasteurized.

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

2 thoughts on “What Happens to Milk When It’s Pasteurized?”

  1. But is pasteurized milk good for you?
    Well the answer is no, because if you look at it threw science you will see that. Before atoms start out like a jack then when exposed to the heat they become flat. When you drink this your body dosn’t reconize the substance and it takes it in as an unknow substance. like it would a cold or a virus and your body tries to fight it off

  2. ok so if it isnt good for you then why do people keep making it? if they dont want to have chemicals in their milk then go to the companys and tell them to stop because the chemicals are harmful and that you would appreciate it if they didnt put those harmful chemicals in their milk, or they could at least make a different color thingy for the ultra pastuerized milk….. hello its common since. i am learning about this stuff in AG and it isnt that hard i am not the brightest crown in the box and i passed with flying colors hello if they cant figure this stuff out then idk what to tell them……………. well it just dont make any sense to me if you ask me anyway!!

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