Abstract

IN VITRO STUDIES ON SYNTHESIS OF SILVER NANOPARTICLES USING Streptomyces griseoflavus BPM18 AND EVALUATING ITS ANTIFUNGAL ACTIVITY

*Baskar.V, Subha.K, Kanimozhi.K and Panneerselvam.A

Abstract

Microbial synthesis of nanoparticles has a potential to develop simple, cost effective and eco-friendly methods for the production of technologically important materials. In this study, silver nanoparticles synthesized by Streptomyces griseoflavus BPM18 and characterized by UV - Visible spectroscopy, FT - IR and SEM analysis. The nanoparticles were in the size of ranging from 20 - 60 nm. The morphology of the nanoparticles was mostly spherical shaped. The silver nanoparticle synthesized by Streptomyces griseoflavus BPM18 showed effective inhibitory activity against tested plant pathogen ie., Fusarium oxysporum caused wilt disease in cotton. Synthesized AgNPs by Streptomyces griseoflavus BPM18 could be used effectively to control fungal pathogen. The secondary metabolites produced by Streptomyces griseoflavus BPM18 could be responsible for the observed antifungal activity.

Keywords: Silver nanoparticles, Streptomyces griseoflavus BPM18, Fusarium oxysporum, SEM, FTIR, UV.