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Title: Inactivation of Bacteria Using Bioactive Nanoparticles and Alternating Magnetic Fields
Authors: Novickij, Vitalij
Stanevičienė, Ramunė
Gruškienė, Rūta Gruškienė
Badokas, Kazimieras
Lukša, Juliana
Sereikaitė, Jolanta
Mažeika, Kęstutis
Višniakov, Nikolaj
Novickij, Jurij
Servienė, Elena
Keywords: electromagnetic field
food processing
L. innocua
Issue Date: 2021
Publisher: MDPI
Citation: Novickij, V.; Stanevičienė, R.; Gruškienė, R.; Badokas, K.; Lukša, J.; Sereikaitė, J.; Mažeika, K.; Višniakov, N.; Novickij, J.; Servienė, E. Inactivation of Bacteria Using Bioactive Nanoparticles and Alternating Magnetic Fields. Nanomaterials 2021, 11, 342.
Series/Report no.: 11;2
Abstract: Foodborne pathogens are frequently associated with risks and outbreaks of many diseases; therefore, food safety and processing remain a priority to control and minimize these risks. In this work, nisin-loaded magnetic nanoparticles were used and activated by alternating 10 and 125 mT (peak to peak) magnetic fields (AMFs) for biocontrol of bacteria Listeria innocua, a suitable model to study the inactivation of common foodborne pathogen L. monocytogenes. It was shown that L. innocua features high resistance to nisin-based bioactive nanoparticles, however, application of AMFs (15 and 30 min exposure) significantly potentiates the treatment resulting in considerable log reduction of viable cells. The morphological changes and the resulting cellular damage, which was induced by the synergistic treatment, was confirmed using scanning electron microscopy. The thermal effects were also estimated in the study. The results are useful for the development of new methods for treatment of the drug-resistant foodborne pathogens to minimize the risks of invasive infections. The proposed methodology is a contactless alternative to the currently established pulsed-electric field-based treatment in food processing.
Description: This article belongs to the Special Issue Applications and Properties of Magnetic Nanoparticles
ISSN: 2079-4991
Appears in Collections:Moksliniai straipsniai / Research articles

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