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Indian Journal of Public Health Research & Development
Year : 2019, Volume : 10, Issue : 10
First page : ( 2210) Last page : ( 2215)
Print ISSN : 0976-0245. Online ISSN : 0976-5506.
Article DOI : 10.5958/0976-5506.2019.03182.6

Antibacterial Activity of Zinc Oxide Nanoparticles and Poly (B-hydroxybutyrate)/ZnO Bionanocomposites Against Escherichia coli

salman Zaman1, Al-deen Wejdan R.taj1,*

1Department of Biology, College of Science, University of Babylon, Iraq

*Corresponding Author: Wejdan R.taj Al-deen, Department of Biology, College of Science, University of Babylon, Iraq, Email: wejdan.tajeldin@yahoo.com

Online published on 23 December, 2019.

Abstract

Background

Zinc oxide (ZnO) is an inorganic compound widely used in everyday applications. It is currently listed as a generally recognized safe (GRAS) material by the Food and Drug Administration and is used as food additive. ZnO nanoparticles have been incorporated in polymeric matrices in order to provide antimicrobial activity to the packaging material and improve packaging properties. The aim of current study was to evaluate the antimicrobial activity of ZnO nanoparticles and PHB/ZnO nanobiocomposites against E. coli.

Method

Biosynthesis of ZnO nanoparticles by Lactobacillus casei and studying the characterization of these particles such as structure and morphological measurement including X-Ray diffraction measurements and scanning electron microscope and optical measurements including UV-Vis diffuse reflectance measurements and Fourier Transform Infrared (FTIR) measurements done in other studies.

Results

Data from current study revealed that ZnO nanoparticles exerted concentration-dependent inhibition of bacterial growth against E. coli. However, ZnO/PHB nanobiocomposites exerted stronger inhibition than ZnO nanoparticles.

Conclusion

ZnO nanoparticles enhanced antibacterial effects of the ZnO/PHB nanobiocomposites maybe via mechanical performance, barrier and/or antibacterial properties of polymers.

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Keywords

Antibacterial activity, ZnO, E. coli, UV-Vis, ZnO/PHB nanobiocomposites.

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