Antimicrobial Activity of Ag:ZnO/Chitosan Composites
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2014, Vol 37, Issue 3
Abstract
This paper deals with Ag, ZnO and Ag-doped ZnO nanoparticles embedded in chitosan (CS) matrix, prepared by hydrolysis of zinc acetate in isopropanol in the presence of lithium hydroxide (LiOH) in low temperature conditions. The nanoparticles embedded in the chitosan matrix were characterised by Xray diffraction (XRD) and scanning electron microscopy (SEM). The antimicrobial activity of Ag/CS, ZnO/CS and Ag:ZnO/CS composites with respect to simple CS polymer was investigated by using the paper disc method on Mueller-Hinton agar without blood against the Gram-negative bacteria, Escherichia coli (E. coli) and the Gram-positive bacteria, Staphylococcus aureus (S. Aureus) on Mueller-Hinton agar with blood. The nanocomposites materials showed good antimicrobial activity, that recommends them for applications in medical and food packaging fields.
Authors and Affiliations
Mariana (BUȘILĂ) IBĂNESCU, Dana TUTUNARU, Viorica MUȘAT
Keywords
Related Articles
- EP ID EP587861
- DOI -
- Views 80
- Downloads 0
Mechano-Erosion: a Novel Test Methodology to Accelerate Erosion in Rolling Contact Fatigue Experiments
Rolling contact fatigue testing of rolling elements with low saturation temperature lubricants result, in several difficulties. Mainly, uncontrolled phase changes due to flow dynamics often cause difficulties in assessin...
Effect of Heavy Metals on the Germination of Wheat Seeds: Enzymatic Assay
Stress caused by heavy metals is a major problem which affects agricultural productivity and, implicitly, human health. Natural flora presents differences of tolerance to heavy metals. Some plants grow well in a soil enr...
Modelling and Numerical Simulation of the Atmospheric Dispersion of Pollutants from an Integrated Iron and Steel Complex - Part I
The Iron and Steel Complex processes handle, store and undertake important amounts of raw materials (iron ores, coals, etc.) energy, fuels, waste waters, slags and other different types of wastes. These activities have a...
Contributions to Increasing the Quality of Urban Life Through the Use of an Intelligent Road Traffic Management System
Traffic congestion is a phenomenon which occurs when road traffic is disturbed. In Galati city, traffic congestion increases rapidly due to an increase in the number of vehicles on the road. This work is an attempt to an...
Mechanical Resistance as a Function of Local Properties
The present study makes an estimation of an automotive engine piston mechanical properties and fatigue life based on some characteristics of metallurgical microstructure. Because it is intended to assess the properties i...