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29 Cards in this Set
- Front
- Back
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major ingredient of detergents and soaps
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quaternary ammonium compounds (QAC)
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QAC's act as a ____ that alter membrane ____ of some ____ & ____
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surfactant - protein - bacteria - fungi
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QAC's (is/isn't) ____ sporicidal
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isn't
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soaps mechanically remove ____, ____ & ____ containing microbes
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dirt - soil - grease
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germicidal soap kills millions more ____ than non-germicidal
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bacteria
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4 examples of heavy metals in solutions
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silver - mercury - nitrate - thimerosal
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silver & mercury kill ____ cells in low concentrations by inactivating ____
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vegetative - protein
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heavy metal solutions have an ____ action
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oligodynamic
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oligodynamic is active in ____ quantity
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small
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heavy metals (is/isn't) ____ sporicidal
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isn't
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the flu shot contains ____ ____
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heavy metals
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2 examples of aldehydes
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glutaraldehyde - formaldehyde
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glutaraldehyde & formaldehyde kill by ____/____ proteins & ____
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cross-linking - alkylating - DNA
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glutaraldehyde are in 2% solution (cidex) used as a sterilant for ____ sensitive ____
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heat - instruments
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formaldehyde is used as a ____ & ____
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disinfectant - preservative
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the ____ of formaldehyde limits its use
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toxicity
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aldehydes (is/isn't) ____ sporicidal
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is
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____ are involved with cross-linking of proteins & DNA
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glutaraldehyde
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formaldehyde is common in ____ products
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household
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4 examples of gases & aerosols
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ethylene oxide - propylene oxide - betapropiolactone - chlorine dioxide
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gases & aerosols have strong ____ agents & ____-____ proteins
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alkalating - cross-link
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gases & aerosols (is/isn't) ____ sporicidal
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is
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4 applications of gases & aerosols
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equipment - bedding - disposables - sterilization
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gases & aerosols are very ____ & can effect the ____, ____ & ____ ____
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toxic - eyes - skin - mucus membranes
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are gases & aerosols carcinogenic
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yes
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ethylene oxide is involved with a ____ chamber
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gas
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organic acids & chemical food preservatives are used in food to ____ microbial growth
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inhibit
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5 examples of organic acids & chemical food preservatives
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sulfur dioxide (E220-228) - sodium benzoate/benzoic acid (E210-223) - sorbic acid (E200-203) - propionic acid (Ca propionate (e280-283) - nitrates + nitrites (E249-250)
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sulfur dioxide is commonly used to ____ ____
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preserve food
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