上 泽充通大学 Shanghai Jiao Tong University Lecture 6-1 Microbial Growth Control in vitro and in vivo Chapter 26 in Brock's Biology of Microorganisms Chen Feng School of Life Science and Biotechnology Shanghai Jiao Tong University http://micro.sjtu.edu.cn
Lecture 6-1 Microbial Growth Control in vitro and in vivo Chen Feng School of Life Science and Biotechnology Shanghai Jiao Tong University http://micro.sjtu.edu.cn Chapter 26 in Brock’s Biology of Microorganisms
上泽充通大学 Shanghai Jiao Tong University Why do we need growth control? Growth of unwanted bacteria Outside our body:Food spoilage-growth of bacteria in our food,e.g.milk,would deplete nutrition. Inside our body:Infectious disease-growth of bacteria within our body would cause health problems Shanghai Jiao Tong University
Shanghai Jiao Tong University Why do we need growth control? Growth of unwanted bacteria • Outside our body: Food spoilage-growth of bacteria in our food, e.g. milk, would deplete nutrition. • Inside our body: Infectious disease-growth of bacteria within our body would cause health problems
上泽充通大￥ Shanghai Jiao Tong University Definition of Some Terms ©Decontamination净化，去污 Treatment that renders an object or inanimate surface safe to handle 国Disinfection消毒 The process of eliminating nearly all pathogens,but not all microorganisms,from a object or habitat @Sanitization卫生处理 Closely related to disinfection.The microbial population is reduced to levels that are considered safe by public health standards. @Sterilization杀菌 The killing or removal of all living organisms and the viruses from a object or habitat. Shanghai Jiao Tong University
Shanghai Jiao Tong University Definition of Some Terms Decontamination净化,去污 • Treatment that renders an object or inanimate surface safe to handle Disinfection消毒 • The process of eliminating nearly all pathogens, but not all microorganisms, from a object or habitat Sanitization卫生处理 • Closely related to disinfection. The microbial population is reduced to levels that are considered safe by public health standards. Sterilization杀菌 • The killing or removal of all living organisms and the viruses from a object or habitat
上泽充通大￥ Shanghai Jiao Tong University Growth control Prevent growth of unwanted microorganisms ·Inhibition--limiting microbial growth抑菌 Cells maintain integrity-reversible 。 Sterilization-the killing or removal of all viable organisms from a growth medium杀菌 Cells lose their structural integrity-irreversible Agents for growth control o Bacteriostatic agents:inhibit bacterial growth抑菌剂 ·Bactericidal agents:destroy or kill bacteria杀菌剂 Shanghai Jiao Tong University
Shanghai Jiao Tong University Growth control Prevent growth of unwanted microorganisms • Inhibition-limiting microbial growth抑菌 • Cells maintain integrity-reversible • Sterilization-the killing or removal of all viable organisms from a growth medium杀菌 • Cells lose their structural integrity-irreversible Agents for growth control • Bacteriostatic agents: inhibit bacterial growth抑菌剂 • Bactericidal agents: destroy or kill bacteria杀菌剂
上降文通大学 Shanghai Jiao Tong University Methods of Growth Control in vitro ©Physical means ·Heat sterilization热力杀菌 ·Radiation sterilization放射杀菌 ·Filter sterilization:过滤除菌 ©Chemical means ·Antiseptics防腐剂 ·Disinfectants消毒剂 0 Sterilants杀菌剂 Shanghai Jiao Tong University
Shanghai Jiao Tong University Methods of Growth Control in vitro Physical means • Heat sterilization热力杀菌 • Radiation sterilization放射杀菌 • Filter sterilization过滤除菌 Chemical means • Antiseptics防腐剂 • Disinfectants消毒剂 • Sterilants杀菌剂