Please answer the below questions.. and if you you only know the one answer of t

ID: 42499 • Letter: P

Question

Please answer the below questions.. and if you you only know the one answer of these three, please leave a comment also:)

1. Which one is correct?

i. If a food's water activity(Aw) is lower than 0.85, it's hard to be contaminated by bacteria, so it can be stored for a long time.

ii. If a food's water activity(Aw) is lower than 0.6 like cereals, only Xerophiles can spoil the food.

2. Which one exists in canned products, cause food poisoing, and can growth at the temperature lower than 4?C ?

i. Bacillus cereus

ii. Salmonella typhimurium

iii. Clostridium botulinum

iv. Clostridium perfringens

3. Which statement is not correct?

i. Optimum growth temperature of pathogenic microorganisms is 37?C

ii. Listeria monocytogenes, which causes food poisoning, can grow below 5?C.

iii. Staphylococcus aureus' optimum growth temperature is 37?C, and is very virulent.

if the food's water activity is lower than 0.85 its hard to be contaminated by bacteria, because most microorganisms grow bw 0.91 to 0.99 activity.

if food's water activity is lower than 0.6 like cereals only xerophiles can spoil the food.

2. clostridium botulinum

3. listeria monocytogenes which causes food poisioning can grow below 5 degree celsius.( is incorrect.)