chapter 7

Quartenary ammonium compounds quats cationic

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Unformatted text preview: s proteins Effective against tuberculoid bacteria but not endospores Benefits: active in the presence of organic contaminants, active long after application Limitations: odor, cause skin irritations Chemical Methods Chemical Methods 4. Phenolics: cont. Examples: Hexachlorophene now by prescription (can potentially cause neurological damage) as an antiseptic Active ingredient in "Lysol“ disinfectant “Listerine” antiseptic mouthwash Chemical Methods Chemical Methods 5. Quartenary Ammonium Compounds (Quats) Cationic (positively charged) detergents React with membranes to destroy them, may denature proteins Destroy many vegetative bacteria and enveloped viruses Benefits: cheap and great disinfectants Limitations: cause major skin irritations so not used as an antiseptic Chemical Methods Chemical Methods 6. Aldehydes: i.e. formaldehyde Crosslinks to DNA and proteins causing inactivation Can destroy spores as well as vegetative cells Benefits: can be employed as a sterilant if applied for a suf...
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