Multifunctional properties of spherical silver nanoparticles fabricated by different microbial taxa

Heliyon
Sultan M AlsharifAsem A Mohamed

Abstract

This study addresses the impacts of metabolites from different microbial taxa on the fabrication and multifunctional biological properties of spherical silver nanoparticles (Ag-NPs). Three microbial taxa, a bacterial (Bacillus cereus A1-5), actinomycetes (Streptomyces noursei H1-1), and fungal (Rhizopus stolonifer A6-2) strains were used for Ag-NPs biosynthesis, whereas Streptomyces noursei is demonstrated for the first time. These isolates were identified using either 16S rRNA or ITS gene sequencing. Characterization of Ag-NPs was done using color change analysis, Uv-Vis spectroscopy, FT-IR spectroscopy, XRD, TEM, SEM-EDX, DLS, and Zeta potential analysis. All biosynthesized NPs exhibited spherical shape with different sizes ranged from 6‒50 nm, 6-30 nm and 6-40 nm for NPs obtained by A1-5, H1-1 and A6-2, respectively. The crystalline center cubic face of Ag-NPs was confirmed using XRD at 2θ values 38.08o, 44.27o, 64.41o and 77.36o. FT-IR analysis revealed varied intense absorption peaks for biomolecules required for NPs synthesize by each microbial strain. The stability of spherical Ag-NPs was confirmed due to highly DLS negative surface charge of ‒17.5mV, ‒18.9mV, and ‒15.6mV for NPs synthesized by strains A1-5, H1-1, and A6...Continue Reading

Citations

Jan 3, 2021·Biological Trace Element Research·Amr Hosny HashemSalem S Salem
Nov 6, 2020·International Journal of Nanomedicine·Aftab Hossain MondalKasturi Mukhopadhyay
Apr 17, 2021·Journal, Genetic Engineering & Biotechnology·Mostafa MabroukShaimaa K Amer
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Marwa EltarahonyEman Fayad
Jun 13, 2021·Seminars in Cancer Biology·Ali Talha KhalilHari Parsad Devkota
Aug 30, 2021·Biological Trace Element Research·Sajedeh DaeiFatemeh Bahreini

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Datasets Mentioned

BETA
MN252512

Methods Mentioned

BETA
X-Ray
transmission
Scanning
Dynamic light scattering
PCR
surface plasmon resonance
enzyme-linked immunosorbent assay

Software Mentioned

BLAST
SPSS
MEGA

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