Antifungal activity of transparent nanocomposite thin films of pullulan and silver against Aspergillus niger
authors Pinto, RJB; Almeida, A; Fernandes, SCM; Freire, CSR; Silvestre, AJD; Neto, CP; Trindade, T
nationality International
journal COLLOIDS AND SURFACES B-BIOINTERFACES
author keywords Nanocomposites; Pullulan; Silver nanoparticles; Antifungal activity; Aspergillus niger
keywords ANTIBACTERIAL ACTIVITY; NANOPARTICLES; INFECTIONS; POLYMERS; FIBERS; AGENTS; GOLD
abstract Silver has been mainly investigated as an antibacterial agent and less as a fungicide in which concerns antimicrobial properties. In this research, the antifungal activity of composite films of pullulan and Ag nanoparticles (NP) against Aspergillus niger was evaluated using standard protocols. These new materials were prepared as transparent cast films (66-74 mu m thickness) from Ag hydrosols containing the polysaccharide. Fungal growth inhibition was observed in the presence of such silver nanocomposite films. Moreover, disruption of the spores cells of A. niger was probed for the first time by means of scanning electron microscopy (SEM). This effect occurred in the presence of the nanocomposites due to Ag NP dispersed as fillers in pullulan. This polysaccharide was used here as a biocompatible matrix, hence making these nanocomposites beneficial for the development of antifungal packaging materials. (c) 2012 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0927-7765
year published 2013
volume 103
beginning page 143
ending page 148
digital object identifier (doi) 10.1016/j.colsurfb.2012.09.045
web of science category Biophysics; Chemistry, Physical; Materials Science, Biomaterials
subject category Biophysics; Chemistry; Materials Science
unique article identifier WOS:000315127000020
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journal analysis (jcr 2019):
journal impact factor 4.389
5 year journal impact factor 4.263
category normalized journal impact factor percentile 72.001
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