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Louis Pasteur

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Isabel Nicolaysen

on 7 November 2013

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Transcript of Louis Pasteur

Louis Pasteur
Besides Pasteurisation, for which he is most famously known,Louis also made breakthroughs in the field of chemistry. He discovered the molecular basis for the asymmetry of certain crystals, was the professor of chemistry at the University of Strasbourg and made discoveries related to the nature of tartaric acid.
Name: Louis Pasteur
Born: December 27, 1822
Dole, Jura, Franche-Comté, France
Died: September 28, 1895
Marnes-la-Coquette, Hauts-de-Seine,
France (Age 72)
Fields: Chemistry and Microbiology
Pasteurisation is not designed to kill all micro-organisms in food, unlike sterilisation. Sterilisation of food is now rare as it adversely affects the taste and quality of a food product and so is uncommon as it would not be bought on a commercial scale.
Instead ,Pasteurs method aims to reduce the number of viable pathogens so they are unlikely to cause disease so long as the pasturised product is stored correctly and consumed by it's expiration date.
For his influential contributions the the world we live in today, Pasteur was made a Grand Croix of the Legion of Honor, a prestigious French order.
Other Breakthroughs
Pasteurisation was first used in the 1890's when it was thought that the drinking of raw milk(not pasteurised)
was the cause of highly contagious bacterial diseases including bovine tuberculosis and brucellosis.
Pasteurisation also slows spoilage due to microbial growth in food.
Pasteur is probably most well known for the invention of Pasteurisation, namedafter himself. Pasteurisation is the process of heating a food, usually a liquid,to a specific temperature for a predefined length of time and immediately cooling it after it is removed from the heat.
Louis Pasteur, with Claude Bernard, completed the first ever pasteurisation test in April 1862 although the project was originally conceived as a way of wine or beer from souring.
Pasteurisation is still the method used to this day and can still be found on most milk bottles.
The End
Pasteur studied the immune system and vaccination through research on chicken cholera and other diseases.Pasteur was also a large help in producing the first vaccine for rabies,saving the life of a young boy, the first to recieve the treatment in 1885.
Thank you for listening!
Rabid Dog
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