Synthesisof silver nanoparticles by some locallyLactobacillus spp.and detection of their antibacterial activity

Abstract

Abstract:The study included the rapid synthesis and antibacterial activity of silver nanoparticlessynthesized by locally Lactobacillus spp.(Lactobacillus acidophilus, L. gasseri, L.rhamnosus, L. fermentum). The silver nanoparticles were characterized with Atomic ForceMicroscopy (AFM) and found theaverage size ranges from 33.71 to39.16 nm. Finallyantibacterial activities of the silver nanoparticles were checked against pathogenic bacteria(Escherichia coli, Acinetobacter baumannii, Staphylococcus aureus and Listeriamonocytogenes).The zone of inhibiton seems extremely good showing a relatively large zone ofinhibition in both gram positive and gram negative bacterial isolates. To the best of our studythis is the first report on synthesis of silver nanoparticles by locally Lactobacillus spp.