Green synthesis of zinc oxide nanoparticles using brown algae Sargassum ilicifolium extract and evaluation of its antibacterial properties

Document Type : Research Paper


1 Department of Marine Biology, Faculty of Marine Science, University of Hormozgan, Bandar Abbas, Iran

2 Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan

3 Professor, Department of Biology,, University of Qom

4 Department of Marine Biology, Faculty of Marine Science, Chabahar Maritime University, IRAN

5 Department of Chemistry, Faculty of Science, University of Hormozgan



Green synthesis of nanoparticles has attracted a lot of attention due to economic and environmental benefits compared to common chemical synthesis methods. The aqueous extract of brown algae Sargassum ilicifolium was used for the green synthesis of zinc oxide nanoparticles. Biosynthesized nanoparticles were identified by color change, UV-vis spectroscopy, FT-IR, TEM, SEM and XRD. The results showed that the formed nanoparticles are spherical and crystalline with a size range between 15.1 to 27. Antibacterial activity of biosynthesized zinc oxide nanoparticles was investigated by MIC and MBC method against Staphylococcus aureus and Escherichia coli bacteria and the results showed that biosynthesized zinc oxide nanoparticles have a significant antibacterial effect against the tested bacteria. Finally, this paper shows that the green synthesis of zinc nanoparticles from marine macro algae can be an effective, sustainable and environmentally friendly method to produce zinc oxide nanoparticles with antibacterial properties.


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