1. Effect of production process and high-pressure processing on viability of Listeria innocua in traditional Italian dry-cured coppa
- Author
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Roberta Taddei, Federica Giacometti, Lia Bardasi, Paolo Bonilauri, Mattia Ramini, Maria Cristina Fontana, Patrizia Bassi, Sara Castagnini, Francesco Ceredi, Maria Francesca Pelliconi, Andrea Serraino, Federico Tomasello, Silvia Piva, Elisabetta Mondo, and Giuseppe Merialdi
- Subjects
dry-cured meat products ,HPP ,Listeria spp. ,Food processing and manufacture ,TP368-456 - Abstract
In this study the effect of the application of High Pressure Treatment (HPP) combined with four different manufacturing processes on the inactivation of Listeria innocua, used as a surrogate for L. monocytogenes, in artificially contaminated coppa samples was evaluated in order to verify the most suitable strategy to meet the Listeria inactivation requirements needed for the exportation of dry-cured meat in the U.S. Fresh anatomical cuts intended for coppa production were supplied by four different delicatessen factories located in Northern Italy. Raw meat underwent experimental contamination with Listeria innocua using a mixture of 5 strains. Surface contamination of the fresh anatomical cuts was carried out by immersion into inoculum containing Listeria spp. The conditions of the HPP treatment were: pressure 593 MPa, time 290 seconds, water treatment temperature 14°C. Listeria innocua was enumerated on surface and deep samples post contamination, resting, ripening and HPP treatment. The results of this study show how the reduction of the microbial load on coppa during the production process did not vary among three companies (P>0.05) ranging from 3.73 to 4.30 log CFU/g, while it was significantly different (P
- Published
- 2020
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