title: Biosynthesis, characterization and antibacterial studies of silver nanoparticles using pods extract of Acacia auriculiformis.
abstract: The present study reports an environmental friendly method for the synthesis of silver nanoparticles (Ag NPs) using an aqueous extract of Acacia auriculiformis that acts as reducing agent as well as capping agent. The obtained NPs were characterized by UV-vis absorption spectroscopy and showed a sharp surface plasmon absorption band at ∼400 nm. Fourier transform infrared spectroscopy (FTIR) showed nanoparticles were capped with plant compounds. Transmission electron microscopy (TEM) showed that the particles were spherical in nature with diameter ranging from 20 to 150 nm depending on the pH of the solution. The as-synthesized Ag NPs showed antibacterial activity against both Gram negative and Gram positive bacteria with more efficacy against Gram negative bacteria.
authors.affiliation: Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
authors.forename: Pradnya
authors.initials: P
authors.lastname: Nalawade
authors.affiliation: Nuclear Agriculture & Bio-Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
authors.forename: Poulomi
authors.initials: P
authors.lastname: Mukherjee
authors.affiliation: Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India. Electronic address: sudhirk@barc.gov.in.
authors.forename: Sudhir
authors.initials: S
authors.lastname: Kapoor
mesh_terms: D000045:Acacia / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D001424:Bacterial Infections / Q000188:drug therapy; D055772:Green Chemistry Technology; D006801:Humans; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010936:Plant Extracts / Q000737:chemistry; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000900:Anti-Bacterial Agents; D010936:Plant Extracts; D012834:Silver
keywords: Antibacterial activity; Chemical synthesis; Metals; Nanostuctures; Optical properties