Control of Microbial growth
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| tests for evaulating a disinfectant | phenol coefficient, dilution test, filter paper method
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| Typical operating conditions for autoclave sterilization | 15 lb pressure/sq in. for 15 min @121C no microbe/spore can survive
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| Chloramine | combination of chlorine&ammonia municipal water treatment systems
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| Ionizing radiation | high-energy radiation with a wavelength less than 1nm causing ionization x-rays & gamma rays
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| Conditions that influence microbial control | temperature, type of microbe, environment, and physiological state.
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| Organisms used in phenol coefficient test | Salmonella typhosa staphylococcus aureus
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| Ethanol | kills bacteria & fungi but not spores used to enhance the effectiveness of other chemical agents(iodine) optimum 70% 60-95% also works
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| Tridocarbon | inhibits gram positive (strep/staph) dial soap
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| Tincture of iodine | iodine in aqueous alcohol iodophor-combination of iodine and an organic molecule
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| Glutaraldehyde | 10 min kills all bacteria tb and viruses 3-10 hrs for spores used to disinfect hospital instruments including endoscopes, respiratory therapy equip
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| Antisepsis | a chemical method for disinfection of the skin or mucous membranes chemical is called an antiseptic
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| Degerming | the removal of microorganisms in an area also called degermation
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| Sterilization | the removal of all microorganisms including spores
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| Thermal death time | the length of time required to kill all the bacteria in a liquid culture at a given temperature
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| Decimal reduction time | the time (in minutes) required to kill 90% of a bacterial population at a given temperature also called D value
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| Thermal death point | the temperature required to kill all the bacteria in a liquid culture in 10 min
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| Pasteurization | process of mild heating to kill certain spoilage microorganisms or pathogens.
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| dessication | removal of water
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| Incineration | effective way to sterilize and dispose of contaminated paper cups, bags, and dressings
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| Phenol Coefficient | measure of the bactericidal activity of a chemical compound in relation to pheno
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| Ozone | o3,highly reactive form of oxygen supplement of chlorination in treatment of H20
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| Hexachlorophene | Bisphenol, contains two phenolic roots, found in prescription lotion, used for surgical and microbial procedures.
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| Isopropanol | 70% concentration, enhances the effectiveness of other chemicals, denatures proteins,Rubbing alcohol, kills bacteria and fungi but not so much for spores and viruses,
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| Sorbic Acid | anti-fungal,food preservative, organic acid or salt
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| Copper sulfate | destroy green algae,used for swimming pools, fish tanks. reservoirs
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| nonionizing radiation | short wavelength radiation that doesn't cause ionization, UV is an example
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| benzoyl peroxide | found in acne medication
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| mercurochrome | Antiseptic, non-toxic, non-irritating, used on skin and mucous membranes
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| ethylene oxide | gaseous chemosterilizer, dry gas, kills everything, takes several hours to work,hazardous, gets rid of all microbes and spores, disinfects and sterilizes
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| sodium hypochlorite | used as a household disinfectant in bleach, disinfectant in dairies, food processing establishments, and hemodialysis systems
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| benzalkonium chloride | digest TB, destroy bacteria,quat,strongly antimicrobial, found in mouthwash, easily diluted and nontoxic
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Created by:
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