Characterization of silver nanoparticles produced by biosynthesis mediated by Fusarium oxysporum under different processing conditions
The goal of this study was the biosynthesis of silver nanoparticles (SNPs) mediated by the fungus Fusarium oxysporum, as well as the characterization of these nanoparticles including evaluation of the particles size and stability under different processing conditions. The results showed that the biosynthesis produced silver nanoparticles having a mean size of 34 nm and zeta potential values below −30 mV at the conditions used, characterizing the nanoparticles as being stable in suspension. Ultraviolet–visible spectroscopy and flame atomic absorption spectroscopy confirmed the formation of silver nanoparticles and Fourier transform infrared spectroscopy detected the bands corresponding to the binding vibration of amide I and II bands of proteins in addition to the presence of cyclic alkanes, cyclohexane, ethers, and aromatic hydrocarbons. Finally, field emission scanning electron microscopy and transmission electron microscopy revealed the formation of spherical and well-dispersed SNPs.
KeywordsNanotechnology Biosynthesis Silver nanoparticles Fusarium oxysporum Characterization Stability
The authors would like to thank all the services provided by the Laboratory of Mass Transfer (LABMASSA), Laboratory of Process Control (LCP) to the Central Laboratory of Electronic Microscopy (LCME) and to the Central Laboratory of Chemical Analyses, all located at the Federal University of Santa Catarina (UFSC), for all the support of material and equipment for the execution of all the experimental tests of this study.
Compliance with ethical standards
Conflict of interest
The authors declare that for the execution of this study, there was no conflict of interest.
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