AUTHOR(S)
A. Parveen Sulthana1, J. Martin Rathi 2* and K. Sahayaraj 3

ABSTRACT

Owing to theunique properties, nanomaterials play a major role in many areas of science andtechnology. In this paper the antiphytopathogenic activity of gallic acidreduced Terminalia chebula Retz. silver nanoparticles (Ag NPs) wasstudied. AgNO3(10-3 M) stocksolution was prepared by dissolving 17mg of silver nitrate in 100ml ofdouble distilled water. 10ml of gallic acid solution isolated from Terminaliachebula Retz. (Combretaceae) was added to 90ml of 10-3 M AgNO3 solution forreduction of Ag+ions.The reduction of pure Ag+ionswas monitored by measuring in the UV-Vis Spectroscopy at 426nm.Determination of the shape and structure of silver nanoparticle wascharacterized by Transmission Electron Microscopic (TEM) and X-ray Diffractionstudies (XRD). The plasma resonance of the gallic acid reduced silverparticle is brownish yellow. In the light of these studies, the shape ofthe silver nanoparticle (spherical) and face centered cubic (FCC) structurewere explained. The antibiotic experiment conducted in the present studyrevealed the antiphytopathogenic activity of gallic acid reduced Terminaliachebula Retz. silver nanoparticles against the phytopathogen Xanthomonosaxonopodis pv. malvacearum and also confirmed the antiphytopathogenicactivity studies based on “Broth microdilution method” against Xanthomonosaxonopodis pv. malvacearum.

DOI
https://doi.org/10.57182/jbiopestic.7.0.01-06

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