Author(s):

R Ramamoorthy, S Vanitha and Paladugu Krishnadev

Abstract: Silver nanoparticles play an important role in the field of sericulture. This study aims at evaluating the antifungal properties of green synthesised silver nanoparticles from Portieria hornemannii extract against two silkworm larval pathogenic fungus Beauveria bassiana and Metarhizium anisopliae. Recently by adopting greener and eco-friendly method of synthesis of silver nanoparticles developed dynamically. The present work is investigated on the green synthesis of silver nanoparticles by using marine red seaweed P. hornemannii. The synthesized nanoparticles were scrutinized by UV-visible spectrophotometer shows the crest at 430 nm. X-ray crystallography confirmed the silver nanoparticles crystalline personality. The structure and size distribution of the silver nanoparticles were examined by Transmission Electron Microscope (TEM) and the mean average sizes ranges from 9 to 80 nm was clearly shown and most of the nanoparticles were in spherical in shape. Silver nanoparticle of P. hornemannii concentration of 100 µl showed maximum zone of inhibition against B. bassiana (22.6 mm) and M. anisopliae (21.0 mm). The present study elucidates P. hornemannii derived silver nanoparticles can play a vital role in nano-based therapy in sericulture industry.

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