Table of Contents
Journal of Nanoscience
Volume 2013, Article ID 457865, 5 pages
Research Article

Antimicrobial Activity of Carbon Nanoparticles Isolated from Natural Sources against Pathogenic Gram-Negative and Gram-Positive Bacteria

1Research and Development Centre, Bharathiar University, Coimbatore 641046, India
2Research and Postgraduate Department of Chemistry, St. Thomas College, Mahatma Gandhi University, Palai, Kerala 686574, India

Received 9 April 2013; Accepted 24 May 2013

Academic Editor: Mingwang Shao

Copyright © 2013 Sheena Varghese 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.


This paper describes the isolation of carbon nanoparticles (CNPs) from kitchen soot, characterization of the CNPs by UV/visible spectroscopy, SEM and XRD, and their antimicrobial action. The antibacterial activity of the isolated carbon nanoparticles was tested against various pathogenic bacterial strains such as Gram-negative Proteus refrigere and Pseudomonas aeruginosa and Gram-positive Staphylococcus aureus and Streptococcus haemolyticus. The inhibition zones were measured, and it was found that the carbon nanoparticles isolated from natural sources are active against these Gram-negative and Gram-positive bacterial strains.