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microbiology: a human perspective 6th edition
chapter 5
31
Microbiology
Undergraduate 2
03/07/2011

Additional Microbiology Flashcards

 


 

Cards

Term
Sterilization
Definition
Absence of all microbial
Term
Disinfection
Definition
A chemical used to destroy many m/o and viruses
Term
Pasteurization
Definition
used in the food industry at high temps to kill pathogens and reduce the number of m/o
Term
Decontamination
Definition
reduce pathogens to a safe level
Term
Sanitization
Definition

used on utensils at a high temp with detergent

it substantially reduce m/o on objects

used for the public health

Term
Perservation
Definition

Used in the food industry to inhibit growth of pathogens

delays spoilage

silver nitrate and benzoic acid are used

Term
Boiling
Definition

in 5 minutes it destroys most m/o and viruses except endospores!

used for drinking water

Moist heat

Term
Pasteurization Heating method
Definition

delays spoilage/ kills heat sensitive m/o

except sporeformers

used for milk and juice

moist heat

Term
Pressureized steam
Definition

destroys endospores!

used to serilize utensils

Moist heat

15 minutes or longer

Term
Incineration/flaming
Definition

oxydizes cell components to ashes

used for medical wastes

innoculating loop

dry heat

Term

Ionizing radiation

UV radiation

Definition

irradation: Dna damage

they disinfect drinking water

and hospital instuments

Term
Filtration
Definition

filter that retains microbes while letting suspended fluid or air pass through small holes

irridation: DNA damage

Term
Liquid filtration
Definition

used for beer and wine

to sterilize heat sensitive medications

Term

Air filtration

(HEPA)

Definition

used in hospital rooms airplanes vaccum cleaners

to clean the air

Term
Alcohol
Definition

Antiseptic to degerm skin

or to treat instruments

Term
Aldehydes
Definition

Liquid sterilant

can be very toxic

very strong/smelling

when working with place under hood

 

Term
biguanide
Definition
used to wash hands
Term
ethylene oxide
Definition
gas sterilant, toxic, harsh sterilizes medical devices
Term
Halogen
Definition

destroys DNA, proteins

 

Term
Chloride
Definition

inexpensive and available: disinfects objects, surfaces, water

halogen

Term
iodine
Definition
chemical antiseptic that does not kill endospore
Term
metal compound
Definition

Copper that inhibits groth in fish tanks

silver which is very toxic but is used for topical dressings on burns

Term
ozone
Definition
disinfects drinking and waste water
Term
hydrogen peroxide, peracitic acid
Definition

water and oxygen

potent

Term
Phenolics:
Definition
smelly and irratation chemical
Term
triclosan
Definition

detergents toothpastes soaps lotions deodorant

phenolic

Term
hexachlorophene
Definition

can cause neurological damage

phenolic

Term
Quats
Definition

stronger than soap

can kill bacteria

used on food prep surfaces

preserves non-food substances

 

Term
preservation
Definition

physical way: low temp, freezing, desiccation (reducing water)

Chemical way: food preservatives: benzoic, sorbic, and propionic acids

Nitrate/ite: preserves meats

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