MicroControlPt1121_OLS - Controlling Microbial Growth Part...

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Controlling Microbial Growth Part 1: Use of Physical and Chemical Methods Physical and chemical methods are used to control microbial growth on inanimate items and body surfaces Sterilization Destruction of all forms of microbial life, even endospores Disinfection Destruction of pathogenic microbes (not endospores) on inanimate objects Sanitization Cleaning process intended to lower number of microbes on plates, glasses, etc. to safe public health levels Antisepsis Kill or inhibit growth of microbes (not endospores) on body surfaces Biocidal methods : Kill microbes Microbial death is defined as the permanent loss of the ability to reproduce Biostatic methods : Inhibit growth (if treatment is stopped microbes may begin reproducing again) Prions, Endospores Protozoan cysts, Nonenveloped viruses, Certain bacteria ( Mycobacterium tuberculosis, Staph. aureus, Pseudomonas ) Most bacteria, Fungi, Fungal spores, Protozoa, Enveloped viruses 1
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1. Number of microbes present 2. Types of microbes present 3. Time of treatment 4. Concentration of chemical or intensity of physical treatment 5. Treatment Environment A. Temperature, pH (certain chemicals more effective at certain temps)
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This note was uploaded on 02/13/2012 for the course MBI 121 taught by Professor Balish during the Fall '08 term at Miami University.

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MicroControlPt1121_OLS - Controlling Microbial Growth Part...

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