Example $6$

The temperature at the slowest$-$heating location for a liquid food in a can is as

follows:

Time $($min$)$ Temperature $(\backslash$deg C$)$

$075$

$1105$

$2125$

$3140$

$4135$

$5120$

$6100$

The thermal process is being applied to a microbial population with D $121$ of $1\mathrm{.}1$

min and z $=11\backslash$deg C Estimate the lethality $($F $121)$ for the thermal process.