Abstract
Abstract: New non-thermal preservation technologies have created the need to establish equivalence between the lethality of conventional thermal processes and that of their alternatives. Since microbial inactivation need not follow first-order kinetics, and if it does the D-value’s temperature dependence need not be log-linear, the traditional ‘F0 value’ can rarely be directly converted into a survival ratio. For nonlinear inactivation, a model like the Weibullian-Log logistic (WeLL) can translate dynamic survival ratios recorded in thermal, non-thermal or combined processes into an equivalent-time curve at a chosen reference temperature. This can be done in real time or in the analysis of industrial, experimental or simulated data.
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