Synergistic effects of combined ultrasound and peroxyacetic acid treatments against Cronobacter sakazakii biofilms on fresh cucumber

This study investigated the synergistic effects of combined ultrasound (US; 37 kHz, 380 W for 10–60 min) and peroxyacetic acid (PAA; 50–200 ppm) on reducing Cronobacter sakazakii biofilms on cucumbers. US was not sufficient to eliminate C. sakazakii biofilms (0.04–0.60 log-reduction), whereas PAA (200 ppm) significantly (p < 0.05) reduced biofilm formation on cucumber (0.89–1.88 log reduction). Furthermore, the combination of 60 min US and 200...