Catalytic Degradation of Methyl Orange and Anti-bacterial Activity of Biosynthesized Gold Nanoparticles

Asian Journal of Pharmaceutical and Health Sciences,2018,8,1,1863-1867.
Published:March 2018
Type:Research Article
Author(s) affiliations:

Bhagavanth Reddy G1*, Chandra Shakar Reddy N2, Nageshwar M3

1Department of Chemistry, PG Centre Wanaparthy, Palamuru University, TS, INDIA.

2Department of Zoology, PG Centre Wanaparthy, Palamuru University, TS, INDIA.

3Department of Zoology, UCS, Osmania University, TS, INDIA.


The study reports an investigation of the microwave-assisted synthesis of gold nanoparticles (GNPs) using neem gum. The neem gum acts as both reducing and anti-agglomeration agents. The formation of GNPs was identified by instrumental analysis consists of UV-Vis spectrophotometry, Fourier-transform infrared (FTIR) spectrophotometry, X-ray diffraction (XRD), and transmission electron microscopy (TEM). The synthesized GNPs were found to be crystalline and spherical with an average size of 12±2 nm. These GNPs were assessed for the catalytic reduction of Methyl Orange (MO) and anti-bacterial activity. It was established that the reduction reaction follows the pseudo first order kinetics with a reaction rate constant of 0.212 min-1.

Anti-bacterial activity of AuNPs against E.coli and S.aureus after 24 hours of incubation