Open AccessAnti Fungal Studies of Tea Leaf mediated Silver Nano Colloid
Author(s) -
S. Heera,
I. Dhanya,
LiyaMariya Varghese,
M.Suresh Krishna,
Reny Renji
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/995/1/012036
Subject(s) - colloid , silver nano , irradiation , transmission electron microscopy , nano , materials science , absorption (acoustics) , absorption spectroscopy , nuclear chemistry , scanning electron microscope , analytical chemistry (journal) , chemistry , nanotechnology , optics , chromatography , composite material , organic chemistry , physics , nuclear physics
Silver nano colloids are prepared using Tea leaf as reducing and stabilizing agent. Samples with different concentrations of the reducing agents are irradiated with gamma rays of various doses. Transmission Electron Microscope images of the samples show agglomerated clusters of nano particles before irradiation while the images of after irradiation show chain free individual nano particles with reduced size and spherical morphology. The Selected Area Electron Diffraction pattern confirms the crystal nature and face centred cubic structure of nano silver. UV-Visible spectroscopy gives absorption peaks in the blue region. Gamma irradiation results in the reduction in peak intensity without any change in wavelength. A statistical approach is done on treating the gamma irradiated colloidal sample with the as prepared silver nano colloid for measuring the affected area of fungal infection on a potato-agar medium. It is found that the fungal growth is declined rapidly with the introduction of gamma irradiated silver nano colloid than the as prepared colloid.