GREEN SYNTHESIS OF SILVER NANOPARTICLES USING ASPERGILLUS TERREUS (KC462061)

The biosynthesis of nanoparticles has found increasing attention due to environmentally friendly andcost-effective. In this report, silver nanoparticles (AgNPs) were synthesized using a reduction of aqueous Ag+ ion with the culture supernatants of Aspergillusterreusstrain KC462061 were isolated from the roots of date palm and identified as Aspergillusterreus based. A fungal strain, SDP9, isolated from the roots of date palm (Phoenix dactylifera), was identified as Aspergillusterreus based on sequence analysis of the internal transcribed spacer regions (ITS1-5.8S-ITS2) and 28S rRNA. The bioreduction of AgNPs was monitored by ultraviolet-visible spectroscopy.The nanoparticles were characterized by UV–Vis spectrophotometry, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). These analyses revealed thatThe size of nanospheres was about 17.5 nm on average and in the range of 5–30 nm the and predominantly polydispersed and spherical.Moreover, the antimicrobial potential of AgNPs was evaluated. AgNPscould inhibit various bacteria and fungi