The aim of this study was to evaluate the effectiveness of ultrasound treatment combined with
commercial sanitizers in the decontamination step of minimally processed cherry tomatoes. Previously
selected cherry tomatoes were treated with ultrasound (45 kHz) for 10 min in the presence of 20 and
200 mg/L sodium dichloroisocyanurate, 5% hydrogen peroxide, 10 mg/L chlorine dioxide or 40 mg/L
peracetic acid. The reduction of natural contaminant microbiota and inoculated Salmonella adhered to
the surface of the tomatoes were evaluated. The aerobic mesophilic contamination on the cherry
tomatoes was reduced by 0.7e4.4 log10 cfu/g while molds and yeasts were reduced by 1.1e3.4 log10 cfu/g
after different sanitization treatments. The combined treatment of ultrasound and 40 mg/L peracetic acid
resulted in the highest reduction of the natural contaminant population and a reduction of adherent
Salmonella Typhimurium ATCC 14028 by 3.9 log10 cfu/g. These results indicate the potential of using
ultrasound as auxiliary strategy in the sanitization of cherry tomatoes