Survival curves Flashcards
1
Q
What causes an initial shoulder?
A
Clumping
- Each cell in cluster needs to be hit before CFU goes from 1 to 0
Repair mechanisms in a cell
- Some cells may need to be hit twice
2
Q
What causes a tailing curve?
A
Mixed populations and protective effects
3
Q
What causes an initial hump?
A
Germination of spores upon heat stimulation
4
Q
What causes an exponential-like curve (in log)?
A
Resistance of bacteria to microbial agent
