Chapter 5 Microbial Nutrition and Culture medium
Chapter 5 Microbial Nutrition and Culture medium
Nutrition Nutrition is a process by which chemical substances called nutrients are required from the environment and used for the cellular activities of metabolism and growth. Nutrient:the substance could be used by microbes for metabolism or reproduction of cells
Nutrition ： Nutrition is a process by which chemical substances called nutrients are required from the environment and used for the cellular activities of metabolism and growth. Nutrient：the substance could be used by microbes for metabolism or reproduction of cells
Nutrient provide the structural substance,energy, metabolic regulate substance and appropriate physiological environment. Some microbes could use nonmaterial energy-light
Nutrient provide the structural substance , energy, metabolic regulate substance and appropriate physiological environment. Some microbes could use nonmaterial energy-light
Section 1 Six kinds of essential nutrient for microbes I.cellular chemical constitutes It's much alike in the life in the element The main elements areC、H、O、N(90%-g7%to total dry cell weight),Cis about 50%,the others are inorganic nutrient.C/N is 5:1 usually
I. cellular chemical constitutes It’s much alike in the life in the element . The main elements are C、H、O、N (90%-97% to total dry cell weight), C is about 50%, the others are inorganic nutrient. C/N is 5:1 usually. Section 1 Six kinds of essential nutrient for microbes
element ☑Macronutrient:C、H、O、N、P、S ☑others element:K、Na、Ca、Mg、Fe、Mn、 Cu、Co、Zn、Mo,etal ■Existence form: ■☑organic:protein、sugar、lipoid、 nucleic acid、vitamin、decomposition substance,metabolic medial products u☑inorganic salt ash ■☑Vater-.=-70%~90%to wet cell weight
element ØMacronutrient ：C、H、O、N、P、 S Øothers element：K、Na、Ca、Mg、Fe、Mn、 Cu、Co、Zn、Mo, et al Existence form: Ø organic：protein、sugar、lipoid、 nucleic acid、vitamin、decomposition substance、metabolic medial products Ø inorganic salt ash Ø Water-70% ~ 90% to wet cell weight