march 20 micro notes

Home

Get App

Take Quiz

Create

phenols
- penetrate plasma membrane
- lister and carbolic acid
- cresol- active ingretient in lysol
- bisphenols- halogen containing phenols
phenol coefficient

chemical agents evaluated relative to phenol
halogens
- chlorine and drinking water
- bleach
- iodine and betadine
- choramines
- triclosan and hexaclorophene
alcohol
- 70 % ethanol
- isopropanol
- require some water to be effective
- used with other agents
biguanides
- alcohol
- avagard
- killing effect retaled to damage of plasma membrane
- mycobacteria and endospore are resistant
soaps
- emulsification of oils increases bacterial removal
- deodorant soaps contain triclocarbon
acid

anionic agens used in dairy industry
quaternary ammonium compounds
- work best against gram + bacteria
- less effective agains gram -
- kills fungi potozoa and viruses
- psuedomonas resistant
aldehyde
- react with organic functional groups
- formaldehyde
- glutaraladehyde
- used for embalming
heavy metals
- toxic
- silver nitrate used on infant eyes (replaced by antibiotics)
- copper sulfate
- mercury toxicity and resistant
- zinc choloride and oxide in toothpaste
acid and bases
- ph extremes inhibit growth of bacteria
- acid (pickles and tomatoes)
- trisodium
- propinoic acid in bread
- benzoic acid in soft drinks
gases
- very penetrating
- possible carcinogen
- does not damage intruments but expensive to use
ozone

being used in water treatment
hydrogen peroxide

surface disinfecting
benzoyl peroxide

skin treatment
peracetic acid

used in food processing cuz residue is non toxic
ethylene oxide

stronger oxidizer and alkylating agent

Author

andreathors16

142835

Card Set

march 20 micro notes

Description

blahh

Updated

2012-03-21T01:27:16Z