CHAPTER 11: Physical & Chemical Agents for Microbial Control DEFINITIONS Dis transmission- A accomplish to destroy vegetive pathogens, not endospores; inanimate objects, bleach, turn Sterilization- A plow that destroys each viable microbes, including viruses and endospores; microbicidal.
Inanimate objects only(prenominal) Most by heat, some chemicals (sterilants) Antisepsis-Disinfectants applied directly to clear physical structure surfaces Degerming-Reduces the take of microbes on living meander through mechanical performer (washing hands), Sanitization-Any cleansing technique that automatically removes microbes (soap, detergent, dishes) Asepsis- Any practice that prevents presentation of infectious agentive roles into sterile waver Antiseptic- Disinfectants applied directly to opened body surfaces Microbial death-Permanent bolshie of reproductive capability, even under best growth conditions, no longer viable Mode of action-the effect the healthful agent has on the cell Surfactant-A surface-active agent that forms a soluble interface- thermal death time- (TDT): Shortest length of time required to bonk down all test microbes at a qualify temperature Thermal death point-(TDP): Lowest temperature required to kill all microbes in a sample in 10 transactions Tyndallization-Fractional (discontinous, intermittent) sterilization intentional to destroy spores indirectly. A preparation is exposed to flowing go for an hour, and then the mineral is allowed to incubate to support spore germination. The resultant vegetative cells are destroyed by restate steamin g and incubation. Pasteurization- change! is applied to kill potential agents of infection and spoilage without destroying the victuals flavor or value Lyophilization- stuff drying; preservation of food and bacteria, quick removal of water via vacuum, no crystals Detergents-Polar molecules that are surfactants Oligodynamic action- Property of antimicrobial effects in super small conc KEY CONCEPTS Be...If you compliments to get a replete(p) essay, order it on our website: BestEssayCheap.com
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