- He was born on December 27, 1827, to a poor Catholic family in Jura, France.
- In 1842, he graduated with a degree in science from the Royal College of Besançon. A year later, he started studying at École Normale Supérieure, and in 1848, Pasteur was appointed professor of chemistry at the University of Strasbourg.
- In 1856, Pasteur started to study fermentation to help a local wine manufacturer overcome the problem of alcohol souring.
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