single target molecule in each cell whose inactivation causes death. If this
is not the case and there is, say, a large number of the same target
molecules present or a large number of different targets, then several
inactivation events would be required for cell death and a lag would be
observed in the thermal death curve.
Figure 4.4 Deviation from log-linear death kinetics
Figure 4.3 Effect of ethanol on the survival of a lactobacillus in beer at 60 1 C
Chapter 4 71