Stabilization of duck fatty liver by high pressure treatment. Inactivationof Enterococcus faecalis

The effects of combined high pressure (350, 550 MPa) and reduced temperatur e (55, 65 degreesC) treatments for 10, 20, 30 min, on the total aerobic mes ophilic flora (TAMF) of duck fatty liver, were compared with those on inocu lated Enterococcus faecalis flora. Results were compared with those obtaine d from a traditional pasteurization. Seven decimal reductions of the TAMF a nd of Enterococcus faecalis were obtained at 55 degreesC, 550 MPa for at le ast 20 min. Nevertheless, the natural TAMF appears more resistant to the pr essure than the Enterococcus faecalis especially at 350 MPa.