Antibacterial Activity of Silver Nanoparticles Synthesized by using Lichens Heterodermia boryi and Parmotrema stuppeum

Author(s): Senthil Prabhu S, J Renga Ramanujam and Sudha S S

Abstract: Development of eco-friendly green synthesis nanoparticles has become more interest and focus in current scenario. This study reports the synthesis of silver nanoparticles by using methanolic extracts of Heterodermia boryi and Parmotrema stuppeum lichen species collected from The Nilgiris, Tamilnadu. The physical appearance of synthesized nanoparticle was characterized by color change, UV-VIS Spectrophotometer, Electron spectroscopy, Energy dispersive spectroscopy, FTIR and X-ray diffraction techniques. The size of silver nanoparticles synthesized by Heterodermia boryi and Parmotrema stuppeum were at 27.91nm to 37.21nm and 27.69 nm to 36.00 nm respectively. The antibacterial activity of silver nanoparticle was tested against six bacterial pathogens both gram positive and gram negative. The results showed potential activity against Acinetobacter baumanii and Staphylococcus aureus.

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