title: Antibacterial and catalytic activities of green synthesized silver nanoparticles.
abstract: The aqueous beetroot extract was used as reducing agent for silver nanoparticles synthesis. The synthesized nanoparticles were characterized using UV-visible spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). The surface plasmon resonance peak of synthesized nanoparticles was observed at 438 nm. As the concentration of beetroot extract increases, absorption spectra shows blue shift with decreasing particle size. The prepared silver nanoparticles were well dispersed, spherical in shape with the average particle size of 15 nm. The prepared silver nanoparticles are effective in inhibiting the growth of both gram positive and gram negative bacteria. The prepared silver nanoparticles reveal faster catalytic activity. This natural method for synthesis of silver nanoparticles offers a valuable contribution in the area of green synthesis and nanotechnology avoiding the presence of hazardous and toxic solvents and waste.
authors.affiliation: Department of Physics, Mother Teresa Women's University, Kodaikanal 624101, Tamil Nadu, India.
authors.forename: M R
authors.initials: MR
authors.lastname: Bindhu
authors.affiliation: Department of Physics, Mother Teresa Women's University, Kodaikanal 624101, Tamil Nadu, India. Electronic address: ums10@yahoo.com.
authors.forename: M
authors.initials: M
authors.lastname: Umadevi
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D027461:Beta vulgaris / Q000737:chemistry; D002384:Catalysis / Q000187:drug effects; D055772:Green Chemistry Technology / Q000379:methods*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008826:Microbial Sensitivity Tests; D010316:Particle Size; D010936:Plant Extracts / Q000737:chemistry; D012834:Silver / Q000494:pharmacology*; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D010936:Plant Extracts; D012834:Silver
keywords: Antibacterial activity; Catalytic activity; Green synthesis; Silver nanoparticles; Surface plasmon resonance