Ultrasound (US) is proposed to reduce temperature and accelerate the process of pasteurization of packaged hot
dog sausages. They were pasteurized in an ultrasonic bath (25 kHz, 200W) for 10.53min at 74 °C with (US) and
without ultrasound (WUS) and also with conventional pasteurization (CT, water bath at 82 °C, 16 min to reach
73 °C inside of sausages). The temperature was 3.9 °C higher inside of pasteurized sausages using US in comparison
toWUS. Sausages were stored by 60 days and physico-chemical and microbiological parameters were evaluated.
US treatment inhibited the growth of psychrotrophic and lactic bacteria, reduced the lipid oxidation and
promoted little pH and texture modifications during storage, improving the pasteurization. However, no information
are available about the possible generation of toxic substances after US processing and further investigations
must be carried out before the industrial scale-up of the process.