Chemical Sterilization, Lecture notes of Microbiology

Download Chemical Sterilization and more Lecture notes Microbiology in PDF only on Docsity!

a. TYPES ©F micRooRmAMIsms. the agent selected must be Known bo be effective against the type of organisms to be destroyed. chemical agents are not all equally effechve against loocteria, fungi, Viruses and other microorganisms because fox the following VYeasons: l spofes ave move resistant than Vegetative Cells, thats why the same chemical agent cannot be used to disinfect them, it will not wor: >. vifferences aleo exist ketveen Gram eosilive anad Gram negative bacteria: Eschevichio coli is much more resistant to cationic disinfectants than 3 taghylo cecevs Auteus: 3.0ifferences in action also exist between strains of the same species: 3: EnviRonmenTal cCoNnOITIONS: Envitonmental factors such as temperature, pH, time, concentration and Presence of extvaneous otganic material, may all have a beating onthe rate and effeciency of anti microbial action: she successful use of an antimicrobial agent Yequives an understanding of the influence of these conditions en the ParticulaY agent, So it can be employed under the most favourable circumstances.