MICROBIAL GROWTH PHASES II Flashcards
kills bacteria by injuring the cell membrane which results to leakage of cell’s content
phenol/phenolic
CHEMICAL METHODS OF MICROBIAL CONTROL
phenol/phenolic
alcohols
halogens
heavy metals
aldehydes
peroxygens
surface-active agent
gaseous sterilant
organic acid
biguanides
results in protein denaturation and lipid dissolution
alcohols
oxidizing agent
halogens
types of halogens:
iodine - wound aseptic
chlorine - water disinfection
fluorine - used in toothpaste
used in protein and enzyme denaturation
heavy metals
types of heavy metals with meaning
copper sulfate
silver nitrate
mercury
thimerosal
zinc oxide nanoparticles
algicide in swimming pool
Bordeaux mixture
currently used for neonatal gonorrhea
erythromycin
old Merthiolate, new Merthiolate
thimerosal, benzalkonium chloride
very effective antimicrobial
aldehydes
types of aldehydes
formaldehyde
glutaraldehyde
preservative (used in embalming)
formaldehyde
less irritating than formaldehyde
glutaraldehyde
antiseptic/irrigating agent for deep wound
hydrogen peroxide
kills bacteria, algae, plants, snails, fungi
copper sulfate
types of surface-active agents:
soap and base anionic detergents
acid anionic detergents
cationic detergents
used to be prophylactic agent for opthalmia
silver nitrate
used in skin degerming
soap and base-anionic detergents
sanitizers in dairy and food processing industries
acid-anionic detergents
antiseptic for skin, instruments, utensils, rubber good
cationic detergents
quaternary ammonium compound most commonly used antimicrobial preservative.
benzalkonium chloride
quaternary ammonium salt antiseptic used in mouthwashes, toothpastes, lozenges, breath and nasal sprays.
cetylpyridinium chloride
for protein denaturation
gaseous sterilant
has very high penetrating power and denatures microbial proteins
ethylene oxide
inhibits metabolic reactions
organic acids
disrupts the plasma membrane
biguanides
brand of mouthwash/gargle
orahex
