Free radical scavenging activity of zinc oxide nanoparticles biosynthesized using Aspergillus carneus
M. Ghareib; M. ABU TAHON; Mahmoud Hussein; Abdallah, Wafaa ElSayed;
Abstract
Zinc oxide nanoparticles (ZnO NPs) were confirmed in this work as good antioxidant source. They were biosynthesized by the preformed biomass
of Aspergillus carneus when contacted with 1 mM zinc nitrate solution of pH 9 after 24 h at 150 rpm and 30°C. The biosynthesized NPs were
moderately distributed, quasi-spherical in shape with clear edges and average size of 8-12 nm. The NPs retained full stability at 4°C for at least six
months. Their zeta potential was found to be 18.3 mV. Crystalline nature of the ZnO NPs was suggested from diffraction rings appeared as lighted
spots on the selected area electron diffraction (SAED) pattern and confirmed by the X-ray diffraction analysis. High radical scavenging activities
(RSA) were found against peroxide (O2
2−) and 2,2–diphenyl-1-picrylhydrazyl (DPPH. Good activities were also recorded against hydroxyl (OH−
)
and superoxide (O2
−
) radicals. This potential RSA can be rendered to the adsorbed biomolecules on the NPs surface especially the phenolic
compounds detected by Fourier transform infrared (FTIR) analysis.
of Aspergillus carneus when contacted with 1 mM zinc nitrate solution of pH 9 after 24 h at 150 rpm and 30°C. The biosynthesized NPs were
moderately distributed, quasi-spherical in shape with clear edges and average size of 8-12 nm. The NPs retained full stability at 4°C for at least six
months. Their zeta potential was found to be 18.3 mV. Crystalline nature of the ZnO NPs was suggested from diffraction rings appeared as lighted
spots on the selected area electron diffraction (SAED) pattern and confirmed by the X-ray diffraction analysis. High radical scavenging activities
(RSA) were found against peroxide (O2
2−) and 2,2–diphenyl-1-picrylhydrazyl (DPPH. Good activities were also recorded against hydroxyl (OH−
)
and superoxide (O2
−
) radicals. This potential RSA can be rendered to the adsorbed biomolecules on the NPs surface especially the phenolic
compounds detected by Fourier transform infrared (FTIR) analysis.
Other data
| Title | Free radical scavenging activity of zinc oxide nanoparticles biosynthesized using Aspergillus carneus | Authors | M. Ghareib; M. ABU TAHON; Mahmoud Hussein; Abdallah, Wafaa ElSayed | Issue Date | Sep-2019 | Journal | Micro & Nano Letters | Volume | 14 | Issue | 11 | Start page | 1157 | End page | 1162 | DOI | 10.1049/mnl.2019.0218 |
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