cells are destroyed, but the spores are undamaged by the heat. The spores then germinate into vegetative cells once the temperature has decreased to an optimum level. Statistical difference in results due to treatments. Significant difference – Spore A highly resistant, dormant form that some bacteria can change into. Spores are usually very resistant to heat, long periods of dryness, and – other adverse conditions that normal vegetative cells cannot survive. Most must be heat shocked to germinate into normal, vegetative cells. Most of the time spores have a toxin associated with them, either within the spore covering, or released at the time of germination or when becoming a spore (sporulation). Strain A specific subset of bacteria. For example, is the genus, is the specie and O157:H7 is the strain. Escherichia coli – Bacteria that can withstand higher than normal temperatures. Thermotolerant – A compound produced by a bacterium or fungi (molds and yeasts) that can cause illness in other Toxin (enterotoxin, mycotoxin, neurotoxin) – living organisms. Specific examples include enterotoxins which affect the intestine, mycotoxins are those toxins produced by fungi, and neurotoxins attack the nervous system. Transdermal synergists Compounds that work with other compounds against bacteria when applied to the surface of a carcass. – Treatment The method of processing that is tested. A good research study will compare various treatments, such as levels of salt in a product, – to a control, in this example the control maybe no salt added. All other conditions should remain the same for all samples tested except the specific treatment. The normal bacteria cell. This is in contrast to a spore. Vegetative cells are susceptible to destruction or damage from heat, Vegetative cell – additives, and other factors that can damage and destroy them relatively easily.
cells are destroyed, but the spores are undamaged by the heat. The spores then germinate into vegetative cells once the temperature has decreased to an optimum level. Significant difference – Statistical difference in results due to treatments. Spore – A highly resistant, dormant form that some bacteria can change into. Spores are usually very resistant to heat, long periods of dryness, and other adverse conditions that normal vegetative cells cannot survive. Most must be heat shocked to germinate into normal, vegetative cells. Most of the time spores have a toxin associated with them, either within the spore covering, or released at the time of germination or when becoming a spore (sporulation). Strain – A specific subset of bacteria. For example, Escherichia is the genus, coli is the specie and O157:H7 is the strain. Thermotolerant – Bacteria that can withstand higher than normal temperatures. Toxin (enterotoxin, mycotoxin, neurotoxin) – A compound produced by a bacterium or fungi (molds and yeasts) that can cause illness in other living organisms. Specific examples include enterotoxins which affect the intestine, mycotoxins are those toxins produced by fungi, and neurotoxins attack the nervous system. Transdermal synergists – Compounds that work with other compounds against bacteria when applied to the surface of a carcass. Treatment – The method of processing that is tested. A good research study will compare various treatments, such as levels of salt in a product, to a control, in this example the control maybe no salt added. All other conditions should remain the same for all samples tested except the specific treatment. Vegetative cell – The normal bacteria cell. This is in contrast to a spore. Vegetative cells are susceptible to destruction or damage from heat, additives, and other factors that can damage and destroy them relatively easily.
SDupdate8-9-2017.docx