International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 5, Issue:5, May, 2016

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2016.5(5): 400-406

In Vitro Study on Antibacterial Activity of Aqueous Extract and Silver Nanoparticles of Andrographis paniculata
S.Jayashree* and G. Sangeetha Vani
Department of Microbiology, Ethiraj College for Women, Chennai, India
*Corresponding author

Silver has been known for many centuries worldwide for its antimicrobial activity. It can be prepared by various methods like physical, chemical and biological method. The biological method includes synthesis of silver nanoparticles from plant extract which is also known as green synthesis. In this study, synthesis of silver nanoparticles (AgNPs) has been performed using stem extract of Andrographis paniculata by reducing aqueous silver nitrate. The silver nanoparticles are characterized by Ultraviolet-Visible (UV-Vis) spectrophotometer. Antimicrobial activity of the silver nanoparticles has been demonstrated by agar well diffusion method and it was found to be effective against Pseudomonas aeruginosa, Bacillus sps, Micrococcus sps and Staphylococcus aureus isolated from the water sample.

Keywords: Silver nanoparticles, Andrographis paniculata ,UV-Vis spectrophotometer, Antimicrobial activity, Agar Well Diffusion method.

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How to cite this article:

Jayashree, S. and Sangeetha Vani, G. 2016. In Vitro Study on Antibacterial Activity of Aqueous Extract and Silver Nanoparticles of Andrographis paniculata.Int.J.Curr.Microbiol.App.Sci. 5(5): 400-406. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.