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Archives of Industrial Hygiene and Toxicology, Vol. 67 No. 1, 2016.

Original scientific paper

https://doi.org/10.1515/aiht-2016-67-2720

Effects of natural antimicrobials on bacterial cell hydrophobicity, adhesion, and zeta potential

Marija Kurinčič ; Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia
Barbara Jeršek ; Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia
Anja Klančnik ; Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia
Sonja Smole Možina ; Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia
Rok Fink ; Faculty of Health Sciences, University of Ljubljana, Slovenia
Goran Dražić ; Institute Jožef Stefan, National Institute of Chemistry, Ljubljana
Peter Raspor ; University of Primorska Faculty of Health Sciences, Izola, Slovenia
Klemen Bohinc ; Faculty of Health Sciences, University of Ljubljana, Slovenia

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Abstract

Interactions between bacterial cells and contact materials play an important role in food safety and technology. As bacterial strains become ever more resistant to antibiotics, the aim of this study was to analyse adhesion of selected foodborne bacterial strains on polystyrene surface and to evaluate the effects of natural antimicrobials on bacterial cell hydrophobicity, adhesion, and zeta potential as strategies of adhesion prevention. The results showed strain-specific adhesion rate on polystyrene. The lowest and the highest adhesion were found for two B. cereus lines. Natural antimicrobials ferulic and rosmarinic acid substantially decreased adhesion, whereas the effect of epigallocatechin gallate was neglectful. Similar results were found for the zeta potential, indicating that natural antimicrobials reduce bacterial adhesion. Targeting bacterial adhesion using natural extracts we can eliminate potential infection at an early stage. Future experimental studies should focus on situations that are as close to industrial conditions as possible.

Keywords

epigallocatechin gallate; ferulic acid; polystyrene; rosmarinic acid

Hrčak ID:

154610

URI

https://hrcak.srce.hr/154610

Publication date:

22.3.2016.

Article data in other languages: slovenian

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