Lecture Notes
^Definition of Microbiology – the study of microorganisms, which are organisms or agents, which are too small to be observed with the unaided eye. Objects having a diameter of less than 0.1mm cannot be seen with out the use of a microscope.
Why do we study microbiology? Because microorganisms have a close association with us – the microbes are in us, on us and everything around us. They are essential for our own survival – we need them, they do not need us.
Food Microbiology – a field on applied microbiology that deals with the production of food by the use and action of microorganisms and the unwanted presence of foodbourne pathogens in our food supply.
Microorganisms are necessary for the production/synthesis of:
1. Bread 7. Sauerkraut 13. Antibiotics
2. Cheese 8. Some types of olives 14. Vaccines
3. Beer 9. Soy sauce 15. Amino acids
4. Wine 10. Tofu 16. Vinegar
5. Yogurt 11. Enzymes 17. Poi
6. Pickles 12. Vitamins 18. Sugars * Microorganisms use many nutrients that the host don’t need or use and therefore keep pathogens from establishing themselves on or in our body by competitive exclusion. * Microbiology is the study of …ologies
Bacteriology – study of bacteria phycology – study of algae
Mycology – study of yeast and mold
Virology – study of viruses (acellular)
Protozoology- study of protozoa
“Prionology” – study of prions (acellular)
Source and Definition of Infection
Pathogen – a disease causing organism
Host – a person who temporarily harbors organisms
Reservoir – the place where a pathogen lives naturally: the soil, an animal’s blood stream, a human colon, etc.
Colony – when organisms temporarily survive in a place outside their normal habitat but cause no disease. Colonization may occur on inanimate objects (fomites) or
Why do we study microbiology? Because microorganisms have a close association with us – the microbes are in us, on us and everything around us. They are essential for our own survival – we need them, they do not need us.
Food Microbiology – a field on applied microbiology that deals with the production of food by the use and action of microorganisms and the unwanted presence of foodbourne pathogens in our food supply.
Microorganisms are necessary for the production/synthesis of:
1. Bread 7. Sauerkraut 13. Antibiotics
2. Cheese 8. Some types of olives 14. Vaccines
3. Beer 9. Soy sauce 15. Amino acids
4. Wine 10. Tofu 16. Vinegar
5. Yogurt 11. Enzymes 17. Poi
6. Pickles 12. Vitamins 18. Sugars * Microorganisms use many nutrients that the host don’t need or use and therefore keep pathogens from establishing themselves on or in our body by competitive exclusion. * Microbiology is the study of …ologies
Bacteriology – study of bacteria phycology – study of algae
Mycology – study of yeast and mold
Virology – study of viruses (acellular)
Protozoology- study of protozoa
“Prionology” – study of prions (acellular)
Source and Definition of Infection
Pathogen – a disease causing organism
Host – a person who temporarily harbors organisms
Reservoir – the place where a pathogen lives naturally: the soil, an animal’s blood stream, a human colon, etc.
Colony – when organisms temporarily survive in a place outside their normal habitat but cause no disease. Colonization may occur on inanimate objects (fomites) or