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Ch. 19 vocabulary


Aciduric bacteria bacteria resistent to acid--survive stomachs full acidity--grow when stomach is empty & at higher pH--produce urease--released as a protein in breakdown product
Antiseptics milder chemicals--(anti--against--septic--putrifaction or make rotten) used on human flesh
Aseptic without contamination
Autoclave sterilization using steam--large pressure cooker
Bactericides disinfectants that kill bacteria
Bacteriostatic agents inhibit growth but do not kill bacteria
Biocides nonspecific agent
Cationic detergents positive charge--may dissolve microbial membranes--leads to microbial death
Chemiclaves use harsh chemicals, such as highly reactive gas ethylene oxide--in a sealed environment, or gamma irradiation
Disinfection reduce the viable numbers of living organism--process that decreases numbers of microbes--may not destroy all of them
Flash pasteurization 71.5 degrees C for 15 seconds
Fungicides disinfectants that kill fungi
Fungistatic agents inhibit growth, but do not kill fungi
Halides iodine and chlorine--due to chemical similarities--bromine used in hot tubs --evaporates more slowly than chlorine/iodine--kill bacteria--reduce numbers rather than kill all microbes
Iatrogenic disease term related to nosocomial disease--physician-induced disease
Incineration burning to sterilize material
Nosocomial diseases acquired in the hospital setting
Pasteurization Louis Pasteur--heats foods such as milk high enough to kill most vegitative cells--30 min. at 63 degrees C
Phenol harsh--used to wash handes before surgery--generally replaced with milder derivatives of phenol call phenolics
Phenol coefficient effectiveness of new agent divided by effectiveness of phenol--used to compare all disinfectants
Phenolics milder derrivitives of phenol
Resident organisms organism that is at its normal site of growth
Sanitize treated to reduce microbes to a safe level
Sterilization kill all life on an object
Transient organisms organism that does not attach and servive on a surface
Ultrafiltration material suspended in water and sterilized--ultrafilter--has pore sizes less than the smalles bacterium--gases sterilized this way
Ultrapasteurization 82 degrees C for 3 seconds
Virucides kill viruses
Created by: heatherlvn