lesson 7 Flashcards
Name the three categories of food borne illnesses
- infection
- intoxication
- toxin mediated infection
Cause of food borne infection
- consumption of food with large number of microorganisms
- microorganisms enter digestive tract
- disrupt functions of intestines
- cause diarrhea
When do the symptoms of food borne infection occur?
6hrs - 48 hrs
Cause of food borne intoxication
-consumption of food containing toxins (waste products) generated by some microorganisms
True or false - toxins are destroyed by heat?
false
Symptoms of food borne intoxication
- nausea/vomiting
- after first 6 hours
Cause of food borne mediated intoxication
- food that has microorganisms on it is ingested
- produce toxins in intestines (favorable conditions for growth)
Symptoms of salmonellosis
- stomach pain
- diarrhea
- chills
- fever
- nausea
- malaise
Source of salmonella enteritidis
- chicken
- poultry
- eggs
How would one destroy salmonella enteritidis? (in chicken, poultry, stuffing)
- cook product 165 F
- 15 sec min
How would one destroy salmonella enteritidis (in eggs)?
-cook product 145 F
What is cross contamination?
transferring micro organism from food that is raw to food that is cooked
Salmonellosis: infection or intoxication?
-infection
campylobacteriosis - infection of intoxication?
-infection
symptoms of campylobacteriosis
- diarrhea (bloody)
- severe stomach pain
- loss of appetite
- nausea
- malaise
- headache
source of campylobacteriosis
intestines of:
- lamb
- pigs
- cattle
- poultry
Salmonellosis onset time
6-48 hrs
campylobacteriosis onset time
2-10 days
campylobacteriosis foods involved
- raw milk
- poultry
- beef
- liver
- water
Listeriosis: infection or intoxication
infection
onset time for listeriosis
1 day -3 wks
symptoms for listeriosis
- meningitis
- fever
- still life births
- flu like illness
- encephalitis
source of listeria monocytogenes
- soil
- infected animals/humans
- water
foods involved in listerosis
- unpasteurized milk
- raw veg
- raw meat
- poultry
- cheese
What is another name for shigellosis?
-bacillary dysentry
Cause of shigellosis
- people not washing hands after loo (transfer of fecal matter)
- flies transferring bacteria
onset days for shigellosis
1-7 days
shigellosis - infection or intoxication?
infection
food involved in shigellosis
- raw produce
- potato salad
- tuna
- turkey
What is the most common food intoxication?
Staphylococcal food intoxication
source of staphylococcal food intoxication
humans
- nose
- throat
- acne
- infected cuts/bruises
Onset time for staphylococcal food intoxiction
1-6 hrs
botulism - infection or intoxication?
intoxication
true/false - botulism can result in death
true
what are favorable conditions for clostridium botulism?
-anaerobic (vacuum, garlic in oil)
foods involved in botulism
- smoked vacuum pack fish
- garlic in oil
- home canned foods
onset time for clostridium botulism
12-36 hrs
symptoms of clostridium botulism
- vertigo
- blurred/double vision
- muscular weakness
scombroid poisoning- infection or intoxication?
-intoxication
cause of scombroid poisoning
-histamine (produced when fish decomposes)
foods involved in scombroid poisoning
- tuna
- mackerel
- bluefish
- mahi mahi
- bonito
What do white blotches on fish signify?
- freezer burns
- has been thawed and refrozen
At what temp must temperature fresh fish be kept?
32-41
Escherichia coli - infection or intoxication?
both
foods involved in E-coli
- raw foods
- raw or undercooked beef
E-coli causes
during slaughter intestinal contents may come in contact with the carcass
onset time for ecoli
12-72 hours
how to destroy e-coli in beef
cook to 158 F
At what temp must food be reheated and within what time frame to avoid ecoli?
- 158 F
- w/in 2 hrs
clostridium perfringens enertis - infection or intoxication?
-both
clostridium perfringens - foods involved
- meat
- gravy
- beans
- poultry
at what temp must hot foods be kept at to control clostridium perfringens?
140 F or above
Onset time for clostridium perfringens
8-22 hours
Bacillius Cereus - infection or intoxication?
both
foods involved in bacilius cereus
- grains
- starch
- rice
- flour
- meats
- milk
onset time for bacilius cereus
30 min - 5 hours
2 diff types of virus
- virus hepatitis
- norovirus
what does virus hepatitis affect?
liver
what are the foods involved in virus hepatitis?
- raw/lightly cooked shellfish
- salads
- cold cuts
What organism is responsible for virus hepatitis
hepatitis A
Onset time for virus hepatitis
15 - 50 days
Cause of norovirus
poor personal hygiene of workers
Where is norovirus virus found?
feces of infected humans
Onset time for norovirus
24-48 hrs
Foods involved in norovirus
- raw shellfish
- raw eggs
- raw veg
How to cook pork to control Trichinosis
- 150 F
- 5 sec
What is trichinella spiralis?
-parasite found in pork
What is the onset time for trichinosis
4-28 days
What is Anisakiasis caused by?
- Parasite:
- anisakis simplex
what is the source of the parasite anisakis simplex?
-marine fish
what temp should seafood be cooked to in order to control anisakis simplex?
145 F
what temp should fish be frozen to to make it safe for sushi use?
- -31 F
- for 15 hrs
what is cyclosporiasis caused by?
- parasite
- cyclospora cayetanensis
