1-624-106 - The Print Collector/Heritage Images

Louis Pasteur, 19th century French microbiologist and chemist, (20th century). Pasteur (1822-1895) developed the pasteurisation process which kills pathogens in milk, wine and foods, and he produced vaccines against anthrax and rabies. In 1884 he was appointed Professor of Chemistry at the University of Lille where he researched the reasons why some alcohols turn sour, discovering in the process, that by heating liquid to a certain temperature, the bacteria were killed.