NTRODUCTION Silver is well known as an antiseptic agent (silver nitrate and silver sulphadiazine) for ages. However, the delivery system in the form of a salt has been a limiting factor for its successful and widespread biological use. The development of nanochemistry has produced micro fine particles which increase silver's solubility and releases silver ions in concentration of 70-100 ppm. Na...

Chitosan–silver (CS–Ag) nanocomposite materials were synthesized by a simple chemical method. The synthesized CS–Ag nanocomposite contains 20 wt% silver. Silver nanoparticles were synthesized by chemical reduction method as well. The CS–Ag nanocomposite was characterized using Field emission scanning electronic microscope (FESEM), X-ray diffraction (XRD) and Fourier transform infrared spectrosc...

Self-assembled particles of genetically engineered human L subunit ferritin expressing a silver-binding peptide were used as nanocontainers for the synthesis of silver nanoparticles. The inner cavity of the self-assembled protein cage displays a dodecapeptide that is capable of reducing silver ions to metallic silver. This chimeric protein cage when incubated in the presence of silver nitrate e...

Silver, known in metallic form since antiquity, has very early been recognized by mankind for its antimicrobial properties, a phenomenon observed, for example, in the context of drinking water (a silver coin in a well), food (silver cutlery, water storage recipients), and medicine (silver skull plates, teeth). Silver compounds were also shown to be useful. For example, dilute solutions of silve...

A simple and inexpensive, single step synthesis of silver nanoparticles was achieved using sodium citrate both as a reducing and capping agent. Silver nanoparticles were synthesized by injecting sodium citrate solution into the solution of silver nitrate at high temperature. The synthetic process was carried out in aqueous solution, making the method versatile and ecofriendly. The synthesized s...

Limited antibacterial activity of silver ions leached from silver-impregnated food contact materials could be due to: 1) the presence of silver resistance genes in tested bacteria; or 2) lack of susceptibility to silver ion-mediated killing in the bacterial strain (K. Williams, L. Valencia, K. Gokulan, R. Trbojevich, S. Khare, 2016 [1]). This study contains data to address the specificity of si...

many reports have been published about the biogenesis of silver nanoparticles using several plant extracts such as pelargonium graveolens (p.graveolens- geranium) and azadirachta indica (neem) but the capacity of their natural reducing constituents to form silver nanoparticles has not yet been studied. in this research the synthesis of silver nanoparticles using geraniol has been investigated. ...

We report results of total energy and electronic structure calculations of fcc and bcc silver bulk and surfaces. We find that under normal conditions (positive pressure) bcc silver is not stable. However, if silver is grown with a volume per atom & 10% larger than that of the well-known fcc silver, the total energy of the bcc structure becomes below that of fcc silver. For bcc (110) a surface s...

This study investigated the antiviral effect of silver nanoparticles on MS2 bacteriophage. Silver nanoparticles were synthesized via chemical reduction method and characterized by transmission electron microscope. Synthesized silver nanoparticles and cultivated MS2 bacteriophage were characterized using zetasizer. The result in this study indicates that the toxicity of silver nanoparticles on M...

objectives:biofilms are communities of bacteria attached to surfaces through an external polymeric substances matrix. in the meantime, acinetobacterbaumannii is the predominant species related to nosocomial infections. in the present study, the effect of silver nanoparticles alone and in combination with biocides and imipenem against planktonic and biofilms of a. baumannii was assessed.  materi...