The Pasteurization Process

Pasteurization is a process that makes drinks like milk safe. It heats the liquid to a high temperature for a short time. This kills harmful germs without changing the taste very much.

Who Invented Pasteurization?

Pasteurization is named after Louis Pasteur, a French scientist. In the 1860s, Pasteur discovered that heating liquids could kill the tiny germs inside them. He first used this process to keep wine and beer from going bad.

Later, people started using pasteurization on milk. Before this, drinking milk could make people very sick. Pasteurization made milk much safer for everyone, especially children.

How Pasteurization Works

To pasteurize milk, it is heated to about 161 degrees Fahrenheit for 15 seconds. This temperature kills most harmful bacteria. Then the milk is quickly cooled and put in containers.

Almost all the milk you buy at the store is pasteurized. Juice and other drinks are pasteurized too. This simple process has saved millions of lives by preventing diseases that come from contaminated drinks.

Fun Facts

• Pasteurization is named after the scientist Louis Pasteur.
• Before pasteurization, milk was one of the most common sources of illness in cities.
• Flash pasteurization heats milk for only 15 seconds.

Did You Know?

Louis Pasteur also helped develop vaccines and proved that germs cause disease, making him one of the most important scientists in history.