Green synthesized silver nanoparticles: Morphology and antibacterial contact effects

Abstract

In the study in which the green synthesis method was preferred, silver nanoparticles (Ag NP’s), which preferred fig (Ficus carica) leaf extracts as a reducing agent, were obtained from their saline solutions. The morphological characteristics of the obtained Ag NPs were studied and antibacterial effects on 8 different bacteria (K. pneumonia, E. coli, P. mirabilis, Shigella, A. baumannii, S. aureus, S. aureus, S. epidermidis) were investigated. Transmission Electron Microscopy (TEM) and UV-Vis spectrophotometer determined morphology and formation of nanoparticles, respectively. The UV-vis absorbance spectra of AgNP exhibit increasing surface plasmon peaks with time of 446 nm. Nanoparticle sizes are at an average value of 13 nm in the 7-33 nm range. The antibacterial effects of Ag NPs vary from bacterial to bacterial and depending on the applied dose and show a contact effect. Positive results were obtained against both gram-positive and negative bacteria and the results were shared.