CHEMICAL METHODS Flashcards
soap and detergents posses antibacterial ingredients such as:
- triclocarbon
- triclosan
example of chemically substituted phenol compounds
- orhto-phenylohenol
- ortho-benyl-para-chlorophenol
form of chlorine that is not used as sterilants
hypochlorite
hexachlorophene mode of action
interruption of electron transport, enzyme inhibition and membrane destruction
rarely used, bacteriostatic
heavy metals
for crede’s prophylaxis
1% silver nitrate
phenolic compounds mode of action
- protein denaturation
- cell membrane and enzyme inactivation
ethylene oxide minimum time
2 hours
used to measure the dissinfecting power of a substance
phenol coefficient
aldehyde mode of action:
Alykylation of nucleic acids and protein denaturation
QUATS mode of action
protein denaturation and cell mebrane destruction
inactivated by irganic compounds and hard water
QUATS
oxidizing agents:
- hydrogen peroxide
- ozone
surface active agents
QUATS
for hospital and institutional disinfection
phenolic compounds
one of the oldest and common disenfectants
chlorine
methods for water sterilation:
- 2-3 drops of bleach in 1L of water (30 mins)
- Chlorine in pools
- use of copper sulfate pentahydrate
- Sodium thiosulfate for water testing
Geobacillus stearothermophilus/Bacillus stearothermophilus
autoclave
reeduce surface tesion
QUATS
iodine plus a neutral polyner carrier that ust be diluted and more preferrable
iodophors