CH 07 Control of Microbial Growth.pdf - Chapter 7: Control...

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Chapter 7: Control of Microbial GrowthControl of Microbial GrowthActions ofAntimicrobialAgentsMicrobialCharacteristics& ControlPhysicalMethods ofControlChemicalMethods ofControlTerminology
Controlling Microbial GrowthThe prevention, elimination, or control of microbes isimportant in reducing the exposure to pathogenic microbes.Sterilization:removal/destruction of all living microbesDisinfection:killing of vegetative pathogens on asurface (inanimate objects); usually w/chemicalsAntisepsis:reduction of pathogensfrom living tissue(sepsis /asepsis)Degerming:removal of transient microbes from skin by mechanicalcleansing or by an antiseptic.Sanitation:reduction of microbial populations on objects to safe levels
Effect of antimicrobial treatmentsBacteriostaticBacteriocidalExposure to antimicrobials reducescell numbers in an exponentialfashionnegative curveFactors influencing efficacy ofantimicrobial treatments:– Number/types of microbes present– Organic load– Exposure time/dose– pH, temperature
Physical & Chemical Agents of Control

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Term
Spring
Professor
MEDRANO
Tags
Microbiology, Antiseptic

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