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Louis Pasteur. Louis Pasteur ForMemRS ( / ˈluːi pæˈstɜːr /, French: [lwi pastœʁ]; 27 December 1822 – 28 September 1895) was a French chemist, pharmacist, and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization, the last of which was named after him.
Pasteur immunized 70 farm animals, and the experiment was a complete success. The vaccination procedure involved two inoculations at intervals of 12 days with vaccines of different potencies. One vaccine, from a low-virulence culture , was given to half the sheep and was followed by a second vaccine from a more virulent culture than the first.
Today, it is hard for us to fully appreciate the great revolution in medicine known as “germ theory” and the role that animal research played in its development. It seems impossible that people once believed that foul odors could create disease or that “evil spirits” could cause a person to become ill. We have also forgotten how rare it was for parents to see all of their children ...
The subsequent work of Louis Pasteur, Robert Koch, and Joseph Lister would further substantiate the germ theory of disease. While studying the causes of beer and wine spoilage in 1856, Pasteur discovered properties of fermentation by microorganisms. He had demonstrated with his swan-neck flask experiments that airborne microbes, not spontaneous ...
However, Pasteur made several other very important contributions to science that you should know about. Molecular asymmetry. In studying crystals of sodium ammonium tartrate, Pasteur found that although they had the same chemical composition, they did not necessarily have the same structure. He noted that the molecules occurred in two mirror ...
Louis Pasteur was a French scientist who specialised in chemistry and microbiology. ... Pasteur’s experiments brought greater understanding of the process of fermentation close fermentation The ...
Aug 31, 2011 · Summary. Louis Pasteur related certain microorganisms to certain fermentation processes and determined that if competing microorganisms entered the picture, the desired fermentation process would be “diseased.”. His logical thinking and, more importantly, his experiments had defined the germ theory of fermentation.
