The effect of high hydrostatic pressure (HHP) treatments in combination with the lactoperoxidase system
(LPOS) or activated lactoferrin (ALF) on Listeria monocytogenes, Salmonella enterica subsp. enterica serovar
Enteritidis and Escherichia coli O157:H7 was investigated in cured beef carpaccio stored at 8 C or 22 C
during 7 d. HHP (450 MPa for 5 min) reduced pathogen levels by 1e3 log units and the antimicrobial
effect remained during 7 d of storage under temperature abuse conditions at 8 C and at 22 C. The
individual application of LPOS and ALF did not affect the survival of the three pathogens studied during
storage. However, a synergistic bactericidal interaction between LPOS and HHP was observed against S.
Enteritidis and E. coli O157:H7. Combined treatments of HHP with LPOS would be useful to reduce the
intensity of pressurization treatments diminishing changes in the quality of meat products.
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