Combined application of modified atmosphere packaging and protective culture in fresh chicken legs against Campylobacter jejuni

摘要

In this study, a challenge test was performed to evaluate the combined effect of protective strain (Bifidobacterium longum PCB 133) and MAP (30% CO_2/70% N_2) on the inactivation of native microorganisms and on the Campylobacter jejuni inoculated strain (CECT 7572) on fresh chicken legs stored at 4°C during 17 days. The inhibitory effect of B. longum PCB 133 against C. jejuni was not as strong in chicken legs as in vitro, however, it has been demonstrated that it has a positive effect on shelf life extension. When using MAP, chicken legs increased their shelf life in 3 days in comparison with air packed samples. When bioprotective culture is combined with MAP products expanded their shelf life 3 days more than when using MAP and 6 days more in comparison with air packaging legs.