Unit 5 - Pathogens
Gram Negative, non spore forming pathogen that is found in the environment and dairy/vegetable processing facilities. The resulting illness largely impacts high risk groups.
What is Listeria monocytogenes?
Dehydrated agar plates that are available for total viable count, yeast and molds, but cannot identify the colony morphology.
What are petri films?
Known as "Beaver Disease" as beavers can contaminate drinking water sources.
What is Giardia?
Testing of the area outside of the processing facility but still a risk for contamination.
What is zone 4?
Covers all risks from biological, physical and chemical.
What is HACCP?
1. The ingestion of toxin present in foods
2. The ingestion of a viable microbe
3. The ingestion of a viable organism that then produces toxin
What is intoxication, infection and toxico-infection?
Depend on the growth of microbes on solid nutrient media and the growth of microbes in liquid broth.
What are indirect methods?
Can be caused by contact with feces of an infected cat.
What is Toxoplasma gondii?
The effectiveness of Quaternary Ammonium Compounds as a sanitizer can be significantly reduced by these two compounds.
What are calcium and magnesium?
A private industry-led organization that benchmarks existing food safety standards for equivalency.
What is the GFSI?
This toxin can enter the bloodstream, cleave a single adenine unit from 28S rRNA and trigger protein synthesis leading to cell death, causing a serious health condition.
What is shiga toxin?
Inhibits and allows for the growth and identification of certain microorganisms.
What are selective and differential media?
Proteins that stabilize synaptic junctions and have 9 neurological diseases.
What are prions?
The five steps of cleaning and sanitizing.
What are
1. dry clean
2. pre-rinse
3. apply detergent
4. post rinse
5. sanitize
This prevention control system does not require the identification of CCPs.
What is HARPC?
This syndrome branches off of the overall pathogen, and has similar symptoms to Staph aureus. Incubation time of 0.5-5 hours.
What is emetic syndrome?
High ionic species become present the more conductive the liquid becomes.
What is impedance?
Contain thick cell walls, have slow growth and reproduce and enhance stress resistance.
The outerspore coat acts as a physical barrier and the cortex and SASP act as a glass structure to protect DNA.
What are endospores?
Measurable target levels that will immediately indicate that the product is at risk from an identified hazard.
What are critical limits?
The person credited to shutting down the vendor at the CNE, responsible for a sweet n salty, yet contaminated, product.
Who is Jim Chan (the GOAT)?
Highly sensitive culture-based method that can be used for samples with low microbial numbers.
What is MPN?
An intestinal protozoan that can be lethal and is difficult to detect (mainly molecular based).
What is Cryptosporidium parvum?
This sanitizer results in off flavours in foods and tends to stain and discolour equipment. Conversely, it is less corrosive than chlorine and effective in hard water.
What are iodine compounds?
This HACCP step outlines actions to be taken when monitoring indicates that the process is moving out of control at a CCP.
What is step 5 - establish corrective procedures?