Temperature requirements/Food Safety

What are psychrophiles temperature preferences? (3)

• Love the cold

• grow between 5-15 C

• Die at 20 C

Psychotrophs (3)

Mix: 5C

Max: 30-45

Optimal: 15-30 C

Psychotrophs can also do what? (1)

Spoil food in your fridge

Mesophiles(3)

Min: 10 C

Max: 45 C

Optimum 25-45 C

what about bacteria and pathogens linked to mesophiles? (4)

• Most bacteria are mesophiles

• Most pathogens have an optimum temp of 37 C (human bodies temperature)

Thermophiles (3)

Min: 40 C

Max 80 C

Optimal: 65 C

Hypothermophiles

Min: 75 C

Max: 121 C

Optimum: Boiling temperatures

what is an example if where you would find a hyperthermophile? (1)

Deep ocean vents

What can heat kill and give an example. (3)

• Psychotrophs

• mesophiles

• eg. cooking

What does cold temperature’s slowing effects on growth affect? (1)

Psychrotrophs