title: Surface enhanced Raman scattering, antibacterial and antifungal active triangular gold nanoparticles.
abstract: Shape controlled syntheses of gold nanoparticles have attracted a great deal of attention as their optical, electronic, magnetic and biological properties are strongly dependent on the size and shape of the particles. Here is a report on the surface enhanced Raman scattering (SERS) activity of Cinnamomum zeylanicum leaf broth reduced gold nanoparticles consisting of triangular and spherical like particles, using 2-aminothiophenol (2-ATP) and crystal violet (CV) as probe molecules. Nanoparticles prepared with a minimum leaf broth concentration, having a greater number of triangular like particles exhibit a SERS activity of the order of 10(7). The synthesized nanoparticles exhibit efficient antibacterial activity against the tested gram negative bacterium Escherichia coli and gram positive bacterium Staphylococcus aureus. Investigations on the antifungal activity of the synthesized nanoparticles against Aspergillus niger and Fusarium oxysporum positive is also discussed.
authors.affiliation: Department of Optoelectronics, University of Kerala, Thiruvananthapuram 695 581, India.
authors.forename: S L
authors.initials: SL
authors.lastname: Smitha
authors.forename: K G
authors.initials: KG
authors.lastname: Gopchandran
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D000935:Antifungal Agents / Q000737:chemistry* / Q000494:pharmacology; D001228:Aspergillosis / Q000188:drug therapy; D001234:Aspergillus niger / Q000187:drug effects; D002935:Cinnamomum zeylanicum / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects; D004927:Escherichia coli Infections / Q000188:drug therapy; D060585:Fusariosis / Q000188:drug therapy; D005670:Fusarium / Q000187:drug effects; D006046:Gold / Q000737:chemistry* / Q000494:pharmacology; D055772:Green Chemistry Technology; D006801:Humans; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D018515:Plant Leaves / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D013203:Staphylococcal Infections / Q000188:drug therapy; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D006046:Gold