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31 Cards in this Set
- Front
- Back
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sterilization
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destruction or removal ofall forms of MO life including endospores
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commercial sterilization
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sufficient heat treatment to kill endospores of clostridium botulism in food
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disinfection
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destruction of pathogens;
endospores can survive (disinfectant) work better in warm solution |
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antisepsis
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destruction of pathogens on living tissue
alcohol |
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degerming
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removal of microbes from alimited area; wash hands
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sanitization
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treatment intended to lower microbial counts on eating and drinking utensils to safe public health levels
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sepsis
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bacterial contamination
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aseptic
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area free clear of pathogens
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asepsis
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absence of significant contamination
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vegetative pathogen
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alive and actively metabolizing
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fomites
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pathogens on surfaces
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factors for microbe death rate
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# microbes
environmental influences time of exposure MO characteristics |
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alterations to membrane permeability
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phenol
sanitizer phenolics bisphenols |
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damage to pro and nuceli/enzyme
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halogens heavy metals & cmpds
alcohols aldehyde nitrate/nitrite |
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mechanical
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soap & detergent
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oxidation
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peroxygens
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antimicrobial agents
physical |
scrubbing
heat boiling, pasteur, autoclave, freezing filtration, radiation, drying |
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chemical antimicrobial agents
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phenols
alcohols halogens oxidizing agent surfactants aldehydes |
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phenols
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denature proteins
lysol |
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alcohols
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denature protein, cytoplasmic membrane
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oxidizing agent
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oxidation of microbial enzymes
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halogens
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benadine
chlorox damage enzymes |
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surfactants
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degerm
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aldehydes
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spores & viruses
denature pro inactive nucleic acids |
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TDP
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thermal death point
T to kill mO in 10 min |
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TDT
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length of time all bac @ T to be killed
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DRT
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decimal reduction time
kill 90% population |
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-cide
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killing
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-stat
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inhibit growth
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prokaryote ribosomes
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70s
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eukaryote ribosomes
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80s
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