Antimicrobial activity of biogenic silver nanoparticles, and silver chloride nanoparticles: an overview and comments

Antimicrobial activity of biogenic silver nanoparticles, and silver chloride nanoparticles: an overview and comments

Author Duran, Nelson Google Scholar
Nakazato, Gerson Google Scholar
Seabra, Amedea B. Autor UNIFESP Google Scholar
Abstract The antimicrobial impact of biogenic-synthesized silver-based nanoparticles has been the focus of increasing interest. As the antimicrobial activity of nanoparticles is highly dependent on their size and surface, the complete and adequate characterization of the nanoparticle is important. This review discusses the characterization and antimicrobial activity of biogenic synthesized silver nanoparticles and silver chloride nanoparticles. By revising the literature, there is confusion in the characterization of these two silver-based nanoparticles, which consequently affects the conclusion regarding to their antimicrobial activities. This review critically analyzes recent publications on the synthesis of biogenic silver nanoparticles and silver chloride nanoparticles by attempting to correlate the characterization of the nanoparticles with their antimicrobial activity. It was difficult to correlate the size of biogenic nanoparticles with their antimicrobial activity, since different techniques are employed for the characterization. Biogenic synthesized silver-based nanoparticles are not completely characterized, particularly the nature of capped proteins covering the nanomaterials. Moreover, the antimicrobial activity of theses nanoparticles is assayed by using different protocols and strains, which difficult the comparison among the published papers. It is important to select some bacteria as standards, by following international foundations ( Pharmaceutical Microbiology Manual) and use the minimal inhibitory concentration by broth microdilution assays from Clinical and Laboratory Standards Institute, which is the most common assay used in antibiotic ones. Therefore, we conclude that to have relevant results on antimicrobial effects of biogenic silver-based nanoparticles, it is necessary to have a complete and adequate characterization of these nanostructures, followed by standard methodology in microbiology protocols.
Keywords Silver nanoparticles
Silver chloride nanoparticles
Biogenic synthesis
X-ray diffraction
xmlui.dri2xhtml.METS-1.0.item-coverage New York
Language English
Sponsor INOMAT (CNPq)
Brazilian Network on Nanotechnology (MCTI/CNPq)
NanoBioss (MCTI)
Grant number CNPq: BIOTEC 28/2013
Date 2016
Published in Applied Microbiology And Biotechnology. New York, v. 100, n. 15, p. 6555-6570, 2016.
ISSN 0175-7598 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 6555-6570
Access rights Closed access
Type Article
Web of Science ID WOS:000379317300004

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