Bacterial and fungal spores can survive pasteurization treatments, and germinate/grow after food processing, causing food spoilage and/or outbreaks. High pressure processing (HPP) and power ultrasound technologies can be combined with heat (HPP-thermal or HPTP, TS) to increase the rate of spore inactivation. In this study, the differences in the resistance of bacterial and mould spores of several microbial species to thermal, 600 MPa HPP-thermal, and TS (0.33 W/mL or g) treatments were investigated. Thermal processes in the range of 70–78 °C almost did not affect the five microbial species’ spores tested (<1 log after 40 min). On the contrary, 600 MPa-75 °C HPP treatment reduced all microbial spores (2.8 to >5.8 log after 40 min): C. perfringens presented the highest resistance, followed by B. nivea and N. fischeri moulds, and lastly B. cereus. TS treatments (70–75 °C) up to 60 min had almost no effect on A. acidoterrestris and C. perfringens, while B. cereus in beef slurry was readily inactivated (6 log after 2 min). Activation shoulders were registered for both moulds. As opposed to HPP-thermal and thermal treatments, the type of food had a significant effect in the spore inactivation by TS.
Journal of Food Engineering – Elsevier
Published: Apr 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera