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Louis Pasteur Experiment: Grow Your Own Bacteria

Written by Pasteur Brewing   
Wednesday, 14 December 2011 08:39

Louis Pasteur: Germs ExperimentThis is a great experiment for kids to learn about one of Louis Pasteur's greatest discoveries.

Louis Pasteur was famous for discovering that bacteria and germs are "almost everywhere" in the environment. Pasteur showed that germs hang on dust particles in the air, attach themselves to surfaces during experiments and expose themselves on medical instruments during surgery. One way to highlight Pasteur's discovery is with an experiment of your own! You will take a sample from any surface in the environment and cultivate the bacteria you sample in a petri dish. You will not need a microscope for this experiment. The sample will eventually grown, with the help of the agar nutrient, into a culture visible to the naked eye!

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Louis Pasteur and the Germ Theory

Written by John L. Wilson   
Wednesday, 30 November 2011 11:47
Used with permission by the Stanford Medical History Center.

The Germ Theory

Louis PasteurIn 1854 Pasteur, then 32 years of age, was appointed Professor of Chemistry and Dean of the newly organized Faculté des Sciences in the city of Lille, the richest center of industrial activity in the north of France. When extolling the marvelous discoveries of modern science in his opening speech to the students on 7 December, the young Dean reminded them that "chance only favours the mind which is prepared." [135] These words, that have echoed ever since through the halls of academe, are a key to Pasteur's own achievements. His experiments were always carefully planned and decisive, but it was his genius to make serendipitous observations of historic significance while solving practical problems - such as the problem brought to him by a certain Monsieur Bigo, the father of one of his students.

In the summer of 1856 M. Bigo came to consult Pasteur concerning the difficulty he was having with the alcoholic fermentation of beet sugar in his distillery. Something was going wrong with the process and the alcohol was turning sour. Pasteur was at first hesitant to undertake a project outside his school. Fortunately for posterity he decided to go to Mr. Bigo's distillery and have a look at his vats. He found that, part of the time and for no apparent reason, the alcoholic fermentation process for which yeast was the ferment began to produce lactic acid, an acid usually obtained from sour milk. Pasteur decided that there were in fact two kinds of fermentation, each independent of the other, going on in M. Bigo's vats: alcoholic fermentation due to yeast and lactic acid fermentation due to the lactic acid bacillus. When the alcoholic fermentation turned sour it was due to the production of lactic acid by a contaminant, the lactic acid bacillus. Pasteur discovered and isolated the bacillus, and believed that the air was the source of the contamination.

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On Spontaneous Generation

Written by Alexander Levine   
Thursday, 17 November 2011 10:36

Louis Pasteur and Spontaneous GenerationAn address delivered by Louis Pasteur at the "Sorbonne Scientific Soirée" of

April 7, 18641

Gentlemen!

A number of imposing problems now have our best minds in thrall. These include questions regarding the unity or plurality of the races of Man, whether his creation ought to be dated thousands of years or thousands of centuries past, whether species are fixed, or rather undergo a slow, progressive transformation into new species, how supposedly eternal matter relates to the nothingness outside of it, and whether the idea of God is useless. These are just a few of the issues now subject to learned debate.

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News on Pasteur

Treat the crime epidemic like the disease it is

It was not until the late 19th century that the pioneering work of the likes of Louis Pasteur, and the development and improvement of microscopes, led to the discovery that disease is caused by microbes too small to be detected with the naked human eyes.

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Cal Lord: Bill Nye should rethink creationism stance

“There are only two possibilities as to how life arose. One is spontaneous generation arising to evolution; the other is a supernatural creative act of God. There is no third possibility. Spontaneous generation, that life arose from non-living matter was scientifically disproved 120 years ago by Louis Pasteur and others. That leaves us with the only possible conclusion that life arose as a supernatural creative act of God. I will not accept that philosophically because I do not want to believe in God. Therefore, I choose to believe in that which I know is scientifically impossible; spontaneous generation arising to evolution.”

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At Harlem Hospital, Murals Get a New Life

Mr. Alston also included the microbiologist Louis Pasteur and a surgeon modeled after Louis T. Wright, the first African-American physician appointed to the hospital and a friend of the artist.

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Challenge has changed the world of bread

..innovations in bread-making are rare. In fact, nothing much has changed in the 6,000-year-old process since Louis Pasteur made the commercial production of yeast possible in 1859.

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The 20 best inventions in food history

Frenchman Louis Pasteur’s name will live on as long as there is milk or beer. Drinking milk used to be like Russian roulette, you never knew when you get some random disease and die. Pasteur’s process of heating up and immediately cooling liquids made the world a safer (and tastier) place.

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Pasteur Biography

louis_pasteur_delivering_first_rabies_inoculation_on_joseph_meister_20090420_1148554081Louis Pasteur was a microbiologist and chemist from Dole, France. Learn more about his childhood, history at the university and his ground-breaking work that led to the development of modern medicine. We owe the creation of vaccinations, pasteurization and many more applications of science to Louis Pasteur.

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