Antibacterial activity of Nano-Silver capped by β-Cyclodextrin
Journal Title: Carbon - Science and Technology - Year 2013, Vol 5, Issue 1
Abstract
Silver nanoparticles were prepared by chemical reduction method using sodium citrate as reducing agent, followed by capping with various concentrations of β-Cyclodextrin (β-CD) and characterized by various physicochemical characterization techniques. Antibacterial activity of Pseudomonas aeruginosa (Gram-negative) and Staphylococcus aureus (Gram-positive) was determined by Well-Diffusion method. The nano-silver were spherical under Scanning electron microscopy (SEM) and the XRD result shows average diameters of capped particles are smaller than their equivalent uncapped particles. Capped nano silver particles of four different concentrations were demonstrated as superior for photo stability, when exposed to intense ultraviolet (UV-Vis) radiation for 4 hours, as well as significantly higher antibacterial activity. The influence of β-CD concentration (5 mM, 10 mM and 15 mM) was seems to be delay in bacterial growth, showing that a Trojan horse mechanism may be owing to occur bacterial affinity, thereby improving silver ion absorption.
Authors and Affiliations
R. Sathiya Priya, D. Geetha, P. S. Ramesh
Keywords
Related Articles
- EP ID EP49890
- DOI -
- Views 224
- Downloads 0
Synthesis and characterization of gold nanoparticles using Ficus religiosa extract
We report a cost effective and eco-friendly biosynthesis of gold nanoparticles (F-AuNPs) using aqueous extract of Ficus religiosa as the reducing and stabilizing agent. These nanoparticles were characterized by various t...
Investigations on temperature distribution in welding of Aluminium alloys to steel using FEM
This research study focuses on the objective to establish an analytical model for determining the thermal distribution during friction stir welding (FSW), based on different assumptions of the contact condition between t...
Anaerobic co-digestion of food waste and septage – A waste to energy project in Nashik city
The samples for food waste (FW) and septage were collected from six localities of Nashik city. Physical and chemical characterizations of the wastes were carried out. A Biomethanation potential (BMP) assay was developed...
Adsorption of Reactive Blue 171 from aqueous solution using low cost activated carbon prepared from agricultural solid waste: Albizia amara
The adsorption of Reactive Blue 171 (Reactive Dye) from aqueous solution using activated carbon prepared from Albizia amara pod shell waste as an adsorbent have been carried out. The experimental adsorption data fitted r...
Energy from Biomass – Comparision of biogas production at ambient temperature and at mesophilic temperature in semicontenous anaerobic digester using vegetable market waste
Studies are conducted in semicontinuous anaerobic reactors of 2 L Capacity with effective volume of 1.5 L. Experiments were carried out in the mesophilic temperature range maintained at 35 °C in a thermostat, and paralle...