Table of Contents
Journal of Nanoparticles
Volume 2014, Article ID 689419, 6 pages
Research Article

Biogenic Synthesis of Silver Nanoparticles Using Scenedesmus abundans and Evaluation of Their Antibacterial Activity

1Amity Institute of Microbial Technology, Amity University, Noida, Uttar Pradesh 201303, India
2Department of Bio-Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India

Received 6 August 2014; Revised 23 August 2014; Accepted 25 August 2014; Published 14 September 2014

Academic Editor: Amir Kajbafvala

Copyright © 2014 Nafe Aziz 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 nanoparticle (AgNP) was synthesized using the cell free extract of Scenedesmus abundans with AgNO3. The synthesized silver nanoparticles were characterized by UV-visible spectroscopy, dynamic light scattering (DLS), scanning electron microscopy (SEM), and Photoluminescence. Bioreduction of Ag+ ions showed a gradual change in the colour of the extract and nanoparticles were synthesized having the range of 420–440 nm under UV-visible spectrum. The antibacterial efficacy was assessed against pathogenic bacteria E. coli, Klebsiella pneumoniae, and Aeromonas hydrophila. The present study revealed that the AgNPs prepared from Scenedesmus abundans show antibacterial efficacy against the test pathogens. The bioaccumulation of silver particles makes the organism potential candidate for ecofriendly silver biorecovery system and S. abundans can be used as a source of silver nanoparticles.