E: Pattern of Death due to Heat

Question 1

Decimal reduction time or D value

Answer 1

is the time its takes to reduce the pop of viable cells or endospores in a sample by 90% or 1 log order

Question 2

What is D affected by (3)

Answer 2

temperature, pH and protective effect of food

Question 3

Give an example of how pH affects D

Answer 3

acidic food has a lower D than more basic food e.g. tomatoes vs beans

Question 4

what affects the total time required

Answer 4

initial size of pop

Question 5

application of D value

Answer 5

used in food industry to determine time and temp used in canning of foods