title: Green synthesis of silver nanoparticles using Alternanthera dentata leaf extract at room temperature and their antimicrobial activity.
abstract: A green rapid biogenic synthesis of silver nanoparticles AgNPs using Alternanthera dentata (A. dentata) aqueous extract was demonstrated in this present study. The formation of silver nanoparticles was confirmed by Surface Plasmon Resonance (SPR) at 430nm using UV-visible spectrophotometer. The reduction of silver ions to silver nanoparticles by A. dentata extract was completed within 10min. Synthesized nanoparticles were characterized using UV-visible spectroscopy; Fourier transformed infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy and transmission electron microscopy (TEM). The extracellular silver nanoparticles synthesis by aqueous leaf extract demonstrates rapid, simple and inexpensive method comparable to chemical and microbial methods. The colloidal solution of silver nanoparticles were found to exhibit antibacterial activity against Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia and, Enterococcus faecalis.
authors.affiliation: School of Biosciences & Technology, VIT University, Vellore 632 014, Tamilnadu, India.
authors.forename: Deenadayalan Ashok
authors.initials: DA
authors.lastname: Kumar
authors.affiliation: School of Biosciences & Technology, VIT University, Vellore 632 014, Tamilnadu, India. Electronic address: vpalanichamy@vit.ac.in.
authors.forename: V
authors.initials: V
authors.lastname: Palanichamy
authors.affiliation: Chemistry Research Laboratory, School of Advanced Sciences, VIT University, Vellore 632 014, Tamilnadu, India. Electronic address: mohanaroopan.s@gmail.com.
authors.forename: Selvaraj Mohana
authors.initials: SM
authors.lastname: Roopan
mesh_terms: D027703:Amaranthaceae / Q000737:chemistry*; D000890:Anti-Infective Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D001419:Bacteria / Q000254:growth & development*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D012834:Silver / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000890:Anti-Infective Agents; D010936:Plant Extracts; D012834:Silver
keywords: Alternanthera dentata; Antibacterial activity; Bio-inspired silver nanoparticles; Green chemistry; Surface Plasmon Resonance; TEM