17 research outputs found
Temperature-assisted high hydrostatic pressure inactivation of Staphylococcus aureus in a ham model system: evaluation in selective and nonselective medium
Recommended from our members
The combined action of carvacrol and high hydrostatic pressure on Listeria monocytogenes Scott A
Aims: The aim of the study was to investigate the combined antimicrobial action of the plantderived
volatile carvacrol and high hydrostatic pressure (HHP).
Methods and Results: Combined treatments of carvacrol and HHP have been studied at
different temperatures, using exponentially growing cells of Listeria monocytogenes, and showed
a synergistic action. The antimicrobial effects were higher at 1°C than at 8 or 20°C.
Furthermore, addition of carvacrol to cells exposed to sublethal HHP treatment caused similar
reductions in viable numbers as simultaneous treatment with carvacrol and HHP. Synergism
was also observed between carvacrol and HHP in semi-skimmed milk that was artifcially
contaminated with L. monocytogenes.
Conclusions: Carvacrol and HHP act synergistically and the antimicrobial effects of the
combined treatment are greater at lower temperatures.
Significance and Impact of the Study: The study demonstrates the synergistic
antimicrobial effect of essential oils in combination with HHP and indicates the potential of
these combined treatments in food processing