01:447:390 Lecture Notes - Lecture 19: Ionizing Radiation, Membrane Technology, Disinfectant
Document Summary
Sterilization: the killing or removal of all microbes and their spores. Decontamination: the treatment of an object to make it safe to handle. Disinfection: targets the removal of all pathogens, not necessarily all microorganisms. Heat sterilization: the most widely used method of controlling microbial growth: for maintained sterilization, it needs to be in a closed container of some sort. Uv: sufficient energy to damage dna: distance: best over relatively short distances, penetration. Radiation is used for sterilization in the medical field and food industry: radiation used in the usa for decontaminating select foods (hamburger, chicken, spices may all be irradiated) Membrane filters: filtration can be accomplished by a syringe (the syringe itself doesn"t necessarily have to be sterile, but you"ll have to clean it, whatever you collect the solution in should be sterile. Filter has a pore size so small that bacteria can"t get through.
