Green synthesis of silver nanoparticles from leaf extract of Mimusops elengi, Linn. for enhanced antibacterial activity against multi drug resistant clinical isolates

P Prakash, P Gnanaprakasam, R Emmanuel, S Arokiyaraj, M Saravanan
Colloids and Surfaces. B, Biointerfaces 2013 August 1, 108: 255-9
Green synthesis of metallic silver nanoparticles has attracted nowadays and alternative to physical and chemical approaches. In the present study, silver nanoparticles (AgNPs) were synthesized from leaf extract of Mimusops elengi, L. at room temperature. Formation of stable AgNPs at 1mM concentrations of silver nitrate (AgNO3) typically gave spherical shape particles with diameter range from 55 to 83nm. The kinetic properties of particle formation were proportional to the effect of concentration of AgNO3 solution. In order to identify the compounds responsible for the bioreduction of Ag(+) ion and the stabilization of AgNPs produced, the functional group present in Mimusops elengi, L. leaf extract was investigated using FTIR. The formation of nanoparticle was confirmed using the surface plasmon resonance band shown in UV-vis spectrophotometer. The topography and morphology of the particles were determined using scanning electron microscopy. The crystalline nature of nanoparticles was confirmed from the XRD pattern. Furthermore these green synthesized AgNPs were found to show higher antimicrobial efficacy against multi drug resistant clinical isolates.

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