Chap 5- Approaches to Control of Microbial Growth Flashcards
Person responsible for preventing wound infections; introduced basis of modern infection control; sterilization procedures; poured carbolic acids into wounds to prevent infections
Joseph Lister
Up until this time where physicians did not understand patients could get fatal infections from minor surgeries; infections can be passed from hands/microbes in air
late 19th century/ 1800s
Principle of microbial control include
sterilization and disinfection
removal/ destruction of ALL microorganisms and viruses
sterilization
elimination of MOST pathogens; some microbes may remain
disinfection
chemicals used on inanimate objects; chemicals used on living tissues
disinfectants; antiseptics
kill bacteria; kill fungi; kill viruses
bactericides; fungicides; virucides
reduces number of pathogens to a safe level (ex: washing , use of heat)
decontamination
substantially reduces microbes to meet health standards to minimize spread of disease
sanitization
process of delaying spoilage of perishable items
preservation
brief heating to reduce number of spoilage, destroy pathogens without changing characteristics of product
pasteurization
Daily life control methods
washing w/ soap; cooking; cleaning surfaces; refrigeration
______ of instruments in hospital settings to avoid introducing infection
sterilization
______ new concern and very difficult to destroy via sterilization
Prions
technique used to prevent contamination of samples, workers, environment in labs
aseptic technique
