Control of Microbial Growth Flashcards
sterilisation
- (Latin: sterilis; unable to produce offspring)
•The process by which all living cells, spores and acellular entities (viruses) are rendered non-viable or destroyed
disinfection
the killing or inhibition or removal of pathogenic organisms disinfection is the substantial reduction of the total microbial population and the destruction of potential pathogens.
disinfectants
chemical agents used for disinfection usually on inanimate objects
sanitisation
- reduction of microbial population size to levels considered safe by public health standards.
antisepsis
- (Greek: anti-sepsis; against putrification) The
prevention of infection of living tissue by microorganisms
Antiseptic
chemical agents applied to tissue to prevent infection often not as harsh as disinfectants as they must not destroy too much living tissue
Chemotherapy-
the use of chemical agents to kill or inhibit the growth of microorganisms within living host tissue
cide-
(Latin: cida; to kill)
Germicide - kills pathogens and
non-pathogens
- Bactericide - kills bacteria
- Fungicide - kills fungi
- Algicide - kills algae
- Viricide - destroys viruses or simply: Microbicide - kills
microorganisms
…static
Greek: statikos; causing to
stand or stop)
- Bacteriostatic - inhibits bacteria
- Fungistatic - inhibits fungi
NB:
These agents do not kill, but they
prevent growth. If removed, microbial
growth will resume.
In a drug treatment sense, these drugs
are still highly useful as they allow your
immune system to clear the infection
UTS…think-change-do UTS…think-change-do UTS…think-change-do
Control Of Microbes By Physical, Chemical
And Mechanical Methods
Patterns Of Microbial Death
The D-Value
6 Factors That Influence ectiveness Of Antimicrobial Agents
Biofilms Are More Resistant
To Control
The 4 most-frequently used
physical measures used to
control microorganisms are:
Physical methods of control
Mechanical Methods of Control
Chemical Methods
Typical Antiseptics
Typical Disinfectants
Effectiveness Of Chemical Antimicrobials Against Endospores
Sterilising Chemical Gases
how to sterilise and disenfect??
