1 / 6

Control of Microorganisms by Physical and Chemical Agents

LECTURE 21:. Control of Microorganisms by Physical and Chemical Agents. Microbiology and Virology; 3 Credit hours Atta- ur - Rahman School of Applied Biosciences (ASAB) National University of Sciences and Technology (NUST). Control of Microorganism. The goal is two fold :

alyn
Télécharger la présentation

Control of Microorganisms by Physical and Chemical Agents

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LECTURE 21: Control of Microorganisms by Physical and Chemical Agents Microbiology and Virology; 3 Credit hours Atta-ur-Rahman School of Applied Biosciences (ASAB) National University of Sciences and Technology (NUST)

  2. Control of Microorganism • The goal is two fold: • to destroy pathogens and prevent their transmission, and • to reduce or eliminate microorganisms responsible for the contamination of water, food, and other substances.

  3. Important Definitions • Disinfection: The destruction or removal of vegetative pathogens but not bacterial endospores. Usually used only on inanimate objects. • Sterilization: The complete removal or destruction of all viable microorganisms. Used on inanimate objects.

  4. Important Definitions • Antisepsis: Chemicals applied to body surfaces to destroy or inhibit vegetative pathogens • Chemotherapy: Chemicals used internally to killor inhibit growth of microorganisms within host tissues

  5. Important Definitions • Sanitization is closely related to disinfection. In sanitization, the microbial population is reduced to levels that are considered safe by public health standards • Germicidekills pathogens (and many non-pathogens) but not necessarily endospores. • Bactericide, fungicide, algicide, or viricide • Bacteriostaticand fungistatic

  6. Microbial Control Methods

More Related