Green synthesis of silver nanoparticles from Moringa oleifera leaf extracts and its antimicrobial potential. (9th March 2018)

• Record Type: Journal Article
• Authors: Moodley, Jerushka S; Krishna, Suresh Babu Naidu; Pillay, Karen; Sershen, ; Govender, Patrick
• Is Part Of: Advances in natural sciences. Volume 9:Number 1(2018)
• Publication Date: 2018-03-09
• Subjects: TEM studies -- Moringa oleifera leaf extract -- silver nanoparticles -- antimicrobial activity -- FTIR studies; 2.04 -- 4.02 -- 5.08; Nanotechnology -- Periodicals; Nanoscience -- Periodicals; 620.5
• DOI: 10.1088/2043-6254/aaabb2
• Languages: English
• ISSNs: 2043-6254

Abstract

Abstract: In this study we report on the synthesis of silver nanoparticles (AgNPs) from the leaf extracts of Moringa oleifera using sunlight irradiation as primary source of energy, and its antimicrobial potential. Silver nanoparticle formation was confirmed by surface plasmon resonance at 450 nm and 440 nm, respectively for both fresh and freeze-dried leaf samples. Crystanality of AgNPs was confirmed by transmission electron microscopy, scanning electron microscopy with energy dispersive x-ray spectroscopy and Fourier transform infrared (FTIR) spectroscopy analysis. FTIR spectroscopic analysis suggested that flavones, terpenoids and polysaccharides predominate and are primarily responsible for the reduction and subsequent capping of AgNPs. X-ray diffraction analysis also demonstrated that the size range of AgNPs from both samples exhibited average diameters of 9 and 11 nm, respectively. Silver nanoparticles showed antimicrobial activity on both bacterial and fungal strains. The biosynthesised nanoparticle preparations from M. oleifera leaf extracts exhibit potential for application as broad-spectrum antimicrobial agents.