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Advances in Materials Science and Engineering
Volume 2016 (2016), Article ID 4102196, 6 pages
Research Article

Green Synthesis of Silver Nanoparticles Using Apple Extract and Its Antibacterial Properties

1Corrosion and Coating Laboratory, Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia
2Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
3Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia

Received 10 September 2015; Accepted 29 December 2015

Academic Editor: Simon C. Potter

Copyright © 2016 Zainal Abidin Ali et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Silver nanoparticles (AgNPs) were synthesized using apple extract as a reducing agent and aqueous silver nitrate as the precursor. The AgNPs formation was observed as a color change of the mixture from colorless to dark-brownish. The X-ray diffraction pattern confirmed the presence of only Ag crystallites, and the dynamic light scattering estimates the average sizes of the AgNPs to be 30.25 ± 5.26 nm. Furthermore, Fourier Transform Infrared as well as UV-vis spectroscopy identifies ethylene groups as the reducing agent and capping agent for the formation of the AgNPs. This green synthesis provides an economic, eco-friendly, and clean synthesis route to AgNPs. AgNPs in suspension showed activity against Gram-negative and Gram-positive bacteria with minimum bactericidal concentrations (MBCs) to be in the range from 125 μg/mL to 1000 μg/mL.