week13C2 : food microbio and industrial microbio

Question 1

***food poisoning are caused by ___ and symptoms appear ____

Answer 1

toxins

quickly

Question 2

***food infections are caused by ___ and symptoms appear ____

Answer 2

organisms ingested

in more time than food poisoning

Question 3

T or F : in the case of food infection, the illness can be due to the production of toxins

Answer 3

true, only if the organisms is ingested and than produces toxins or else it will be food poisoning

Question 4

food borne disease are mostly caused by ____

Answer 4

bacteria

Question 5

what are the four most reported food borne diseases?

Answer 5

1. capylobacter
2. salmonella
3. giardiasis
4. staphylococcal

Question 6

** how is the botulism toxin inactivated

Answer 6

by cooking at 80˚C for 10 minutes

Question 7

what is the most common food poisoning

Answer 7

staphylococcal food posoning

Question 8

the toxin of staphylococcus is heat ____

Answer 8

stable (30 minutes at 100˚C)

Question 9

what are the two most frequent strains of salmonella

Answer 9

enteritidis and typhimurium

Question 10

salmonella is a food posoning or food infection

Answer 10

food infection

Question 11

where does salmonella grows in humans

Answer 11

in the intestinal tract

Question 12

what does salmonella do to the intestinal epithelium

Answer 12

destroy the epithelium

Question 13

***how can you kill salmonella

Answer 13

by cooking

Question 14

does staphyloccocus produces food poisoning or food infection

Answer 14

food poisoning (toxin)

Question 15

**what temperature inhibits the growth of e.coli

Answer 15

44.5˚C

Question 16

**how can you kill the e.coli

Answer 16

by cooking