Silver-based crystalline nanoparticles, microbially fabricated
AUTOR(ES)
Klaus, Tanja
FONTE
The National Academy of Sciences
RESUMO
One mechanism of silver resistance in microorganisms is accumulation of the metal ions in the cell. Here, we report on the phenomenon of biosynthesis of silver-based single crystals with well-defined compositions and shapes, such as equilateral triangles and hexagons, in Pseudomonas stutzeri AG259. The crystals were up to 200 nm in size and were often located at the cell poles. Transmission electron microscopy, quantitative energy-dispersive x-ray analysis, and electron diffraction established that the crystals comprise at least three different types, found both in whole cells and thin sections. These Ag-containing crystals are embedded in the organic matrix of the bacteria. Their possible potential as organic-metal composites in thin film and surface coating technology is discussed.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=24112Documentos Relacionados
- Addition of silver nanoparticles reduces the wettability of methacrylate and silorane-based composites
- Preparation and bactericidal effect of composites based on crosslinked copolymers containing silver nanoparticles
- Development of Intracanal Formulation Containing Silver Nanoparticles
- Biosynthesized silver nanoparticles: are they effective antimicrobials?
- New hybrid material based on layered double hydroxides and biogenic silver nanoparticles: antimicrobial activity and cytotoxic effect