Lecture 11

Lecture 11 - Lecture 11: Control of Microbial Growth 1....

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Lecture 11: Control of Microbial Growth 1. Understand the role played by early pioneers in discovering chemical control of microbial growth a. Ignac Semmelweiss and Oliver Wendell Holmes Sr. i. Pre Pasteur/Koch Germ Theory of Disease ii. Decreased puerperal fever which decreased the number of post birth mother deaths b. Lord Lister i. Began the spraying of everything with Phenol (carbolic acid) in surgery rooms to disinfect—phenol is a protein denaturant 2. Know the difference between sterilization, disinfection and antiseptics and the difference between bacteriostatic, bacteriocidal and bacteriolytic treatments a. Bacteriostatic treatment—upon treatment of bacterial colony, reproduction is kept constant resulting in a constant total number of cells without killing any cells b. Bacteriocidal—reproduction decreases with time, resulting in a decreasing number of viable cells c. Bacteriolytic (penicillin)—decreases # of viable cells and total cells d. Sepsis—decay or putrid—implies microbial contamination of tissue or blood
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Lecture 11 - Lecture 11: Control of Microbial Growth 1....

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