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Materials 2018, 11(1), 157; https://doi.org/10.3390/ma11010157

Effect of Novel Quercetin Titanium Dioxide-Decorated Multi-Walled Carbon Nanotubes Nanocomposite on Bacillus subtilis Biofilm Development

1
Process Design and Development Department, Egyptian Petroleum Research Institute (EPRI), Nasr City 11727, Cairo, Egypt
2
Terrestrial Biofilms Group, Institute of Microbiology, Friedrich Schiller University Jena (FSU), Jena 07743, Germany
3
National Institute of Laser Enhanced Sciences (NILES), Cairo University, Giza 12613, Egypt
4
Nanobiophotonic Department, Leibniz Institute of Photonic Technology Jena (IPHT), Jena 07745, Germany
5
Bacterial Interactions and Evolution Group, Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby 2800, Denmark
*
Authors to whom correspondence should be addressed.
Received: 18 October 2017 / Revised: 15 December 2017 / Accepted: 26 December 2017 / Published: 18 January 2018
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Abstract

The present work was targeted to design a surface against cell seeding and adhering of bacteria, Bacillus subtilis. A multi-walled carbon nanotube/titanium dioxide nano-power was produced via simple mixing of carbon nanotube and titanium dioxide nanoparticles during the sol-gel process followed by heat treatment. Successfully, quercetin was immobilized on the nanocomposite via physical adsorption to form a quercetin/multi-walled carbon nanotube/titanium dioxide nanocomposite. The adhesion of bacteria on the coated-slides was verified after 24 h using confocal laser-scanning microscopy. Results indicated that the quercetin/multi-walled carbon nanotube/titanium dioxide nanocomposite had more negativity and higher recovery by glass surfaces than its counterpart. Moreover, coating surfaces with the quercetin-modified nanocomposite lowered both hydrophilicity and surface-attached bacteria compared to surfaces coated with the multi-walled carbon nanotubes/titanium dioxide nanocomposite. View Full-Text
Keywords: titanium oxide nanoparticles; quercetin; multi-walled carbon nanotube; bacterial adhesion; biofilm; hydrophilicity; bacillus subtilis titanium oxide nanoparticles; quercetin; multi-walled carbon nanotube; bacterial adhesion; biofilm; hydrophilicity; bacillus subtilis
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Raie, D.S.; Mhatre, E.; El-Desouki, D.S.; Labena, A.; El-Ghannam, G.; Farahat, L.A.; Youssef, T.; Fritzsche, W.; Kovács, Á.T. Effect of Novel Quercetin Titanium Dioxide-Decorated Multi-Walled Carbon Nanotubes Nanocomposite on Bacillus subtilis Biofilm Development. Materials 2018, 11, 157.

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