Sterilization and Disinfection

Sterilization and Disinfection

Sterilization and Disinfection, Sterilization is defined as the complete pilling or removal of all visible microorganisms and Spores from an object or a particular environment.

Disinfection: Disinfection is defined as the killing, inhibition, or removal of pathogenic microorganisms (usually in inanimate or non-living objects).

Difference:

Terms of ComparisionSterilizationDisinfection
DefinitionThe Process of Complete killing or removal of all living microorganismsThe Process of Complete killing or removal of all living microorganisms
Mode of ActionThey kills both vegetative cells and spores.They kill both vegetative cells and spores.
Type of MethodsThey kill both vegetative cells and sporesChemical methods are used for disinfection
ExamplesHeat (dry and moist)
Radiation
Filtration
Chemical
Alcohol
Chlorine Compounds
Formaldehyde
FoHydrogen Peroxide
Chemical agents used to carry out sterilization are called sterilantsChemical agents used to carry out sterilization are called sterilantsChemical agents used to carry out sterilization are called sterilants
MethodsChemical agents used to carry out sterilization are called sterilants
Physical Method: Chemical Method:
Thermal Gaseous
Filtration Liquid
Radiation
There are two methods of disinfection
1. Thermal Process
2. chemical Process
ApplicationsUsed mainly for decontamination in food Medicine and Research kill my deactivate all forms of life microorganisms Like bacteria
Fungi
Spores
Fluids
Used in daily life like decontamination
Surface and air
To destroy or inhibit the growth of microorganisms on the surface of an instrument or surgical device
Used in the water industry

Food processing
Use in hospitals

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