COMPARATIVE STUDY ON EFFECT OF DIFFERENT CAPPING AGENTS ON THE ANTIMICROBIAL ACTIVITY OF ZNO NANOPARTICLESAbstract
The present study focuses on the synthesis of ZnO nanoparticles by chemical method in alcohol base using three different capping agents-Thioglycerol, oleic acid and Triethanol amine (TEA). The effect of concentrations was analyzed for their effectiveness in particle growth and antibacterial activity. The antibacterial activity of ZnO nanoparticles using these capping agents at different concentrations was tested against six laboratory microorganisms namely Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, Staphylococcus aureus, Proteus, and Klebsiella by agar well diffusion method. Zone of inhibitions produced by ZnO nanoparticles with different capping agents was tabulated. The quantitative measurement of zones of inhibition led to the conclusion that all the capping agents were effective in inhibiting growth of different organisms of which the maximum activity was shown by Thioglycerol, capped ZnO nanoparticles at a concentration of 0.12% against all organisms.
Shabana Nazneen, Roselin Polugari*, Shailaja Raj and Prerana Singh
Department of Microbiology, St. Francis College for Women, Begumpet, Hyderabad, Telangana, India
27 February, 2015
22 April, 2015
08 June, 2015
01 September, 2015