Silver nanoparticles Synthesized using Asafoetida resin, Characterization of their broad Spectrum and Larvicidal Activity

Abstract

Plant secondary metabolites that aid in green synthesis were used to synthesize Ag-nanoparticles, and it is anticipated that such biological processes would have benefits such as being environmentally friendly and gaining popularity. Ferula asafoetida resin aquous extract was initially qualified and quantified by NMR and GC-Mass, Consequently  its ability for silver nanoparticle (AgNPs) biosynthesis was studied. Accordingly, The synthesized asafoetida resin (As-AgNPs) were characterized,the absorption peak in UV-visible spectroscopy was at 460 nm. In SEM image, Ag NPs were spherical, rod and cuboid in shape with average size of 39 nm. FTIR spectrum of the Ag NPs bands at 2958,2924,2858,1463,1379 and 723 cm−1 silver ions were incorporated with asafoetida resin, as indicated by the presence of hydroxyl and carboxyl groups. Comparison of the FTIR spectrum of the Ag NPs with the essential oil revealed the presence of compounds responsible for reducing and capping the silver ions. XRD pattern AgNPs showed four large peaks at shows five diffraction peaks at 2θ = 38.90° (111) , 44.26° (200), 64.43° (220) and 78.38° (311) suggested the presence of crystal structure. Ferula asafoetida resin can be successfully used for biosynthesis of Ag NPs. When compared to the intended mosquito larval species, Asfoetida Ag NPs were less harmful to the non-target organisms studied. As a result, Asfoetida Ag NPs may be used to control mosquito vectors in the region.