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microbio: ch 9 physical and chemical control of microbes

This class was created by Brainscape user Janet Garcia. Visit their profile to learn more about the creator.

By: Janet Garcia
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Decks in this class (22)

term of microbial control
Asepsis,
Aseptic techniques in surgery pre...,
Examples of asepsis
10  cards
factors affecting antimicrobial success
1 number of microbes present,
2 environmental factors presence ...,
3 concentration or intensity of t...
5  cards
measuring heat-killing efficiency
Thermal death time tdt,
Decimal reduction time drt or d v...,
The substrate environment has a d...
3  cards
physical control: HEAT
Moist heat examples,
Dry heat examples,
Dry heat and moist heat both work...
8  cards
HEAT: moist heat sterilization
Moist heat denatures,
Autoclave,
Canned foods sterilized using moi...
5  cards
moist heat: pasteurization
Reduced the overall number of,
Intended to reduce spoilage,
Pasteurization increases
9  cards
HEAT: dry heat sterilization
Kills by oxidation of,
Methods of dry heat,
Comparison of effectiveness
3  cards
mechanical removal of microbes: FILTRATION
Filtration process used with prim...,
Removes microbes based on,
This is a reduction of microbial ...
3  cards
types of filtration
High efficiency particulate air h...,
Membrane filtration
2  cards
other physical methods
Low temp inhibits micrbial grwoth by,
Ex of low temp,
High pressure denatures
4  cards
radiation: spectrum of light
Ionizing radiation,
Nonionizing or uv radiaiton
2  cards
ionizing radiation
Penetrates deep into,
Destroys bacterial endospores but...,
Used for reduce microbial loads in
3  cards
phenols & phenolics
Phenolic compounds disrupt,
Used by lister as the first,
Still in play todayex
4  cards
halogens
Iodine,
Iodine oxidizes plasma membranes ...,
Chlorine
4  cards
various antimicrobials
Phenols,
Halogens,
Alcohols
8  cards
alcohols
Ex of alcohol,
Alcohols denatures,
Viral envelopes and bacterial pla...
4  cards
heavy metals
Ex of heavy metals,
Silver nitrite may be used to pre...,
Silver sulfadiazine used as a
6  cards
quaternary ammonium compounds (aka QUATS)
Cationic,
Quats disrupts,
Quats destroys many vegetative
4  cards
aldehydes
Highly reactive,
Sporicidal and can be used as a c...,
Combine with nucleic acids and
4  cards
ethylene oxide
Often used to sterilize,
Ethylene oxide are,
Combines with
5  cards
essential oils
Plant extracts that have a level of,
Ex of essential oils,
Toxicity is low to
5  cards
food preservatives
Organic acids inhibit microbial,
Organic acids ex,
Organic acids control
6  cards

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microbio: ch 9 physical and chemical control of microbes

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