The combined application of ultrasound and UVC have the potential to control mature Listeria monocytogenes and Bacillus subtilis biofilms

The present study aims to determine the bactericidal and disintegrating effect of ultraviolet type C treatments combined with ultrasound against biofilms of Listeria monocytogenes and Bacillus subtilis formed at different incubation periods (i.e. 24, 48, and 72 h). Treatments applied are UVC doses r...

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Bibliographic Details
Published in:Food control 2024-11, Vol.165, p.110668, Article 110668
Main Authors: Gervilla-Cantero, G., Gervilla, R., Ripolles-Avila, C.
Format: Article
Language:English
Subjects:
Biofilms
Elimination
Food safety
Hurdle effect
Lethality
Pathogens
Persistence
Ultrasounds (US)
Ultraviolet-C (UVC)
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Summary:The present study aims to determine the bactericidal and disintegrating effect of ultraviolet type C treatments combined with ultrasound against biofilms of Listeria monocytogenes and Bacillus subtilis formed at different incubation periods (i.e. 24, 48, and 72 h). Treatments applied are UVC doses ranging from 60 to 360 mJ/cm2 (5–30 s) and US doses of 5–15 min, depending on the maturity of biofilms and the microorganism. Initially, we investigated the effects of UVC on planktonic cells, revealing a significantly higher lethality in L. monocytogenes compared to B. subtilis (P 
ISSN:0956-7135
1873-7129
DOI:10.1016/j.foodcont.2024.110668