Quantitative approach to assess the compliance to a performance objective (PO) of Campylobacter jejuni in poultry meat in France

Predictive modelling is used in microbiological risk assessment to quantify the growth and inactivation of microorganisms through use mathematical models. Campylobacter jejuni one main foodborne pathogens broiler meat considered as most important source human campylobacteriosis. The purpose this study was assess effects heating chilling during poultry slaughter process on kinetics chilled storage order predict its contamination level prior preparation consumption consumer's home, then compliance a Performance Objective (PO). Three strains C. were submitted consecutive heat (54 °C for 3 min) cold (3 2 h) stresses, mimicking two slaughtering steps, i.e. scalding chilling, by inoculating chicken fillets with three different concentrations (4, 6 8 log10 CFU/g). Fillets stored at 17 days under modified atmosphere currently food processors (70% O2/30% CO2). For all strains, bacterial log reduction lowest when inoculated CFU/g. One strain showed an enhanced resistance after application stressing suggesting impact cell history further resistance. Taking variability into account, six storage, predictions ready-to-be-cooked hypothetical PO 2.55 CFU/g, value set before enters home ICMSF (International Commission Microbiological Specifications Foods). This opens path more generally provides inputs refine taking account particularly stressful steps subsequent home.