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Research Article

Biosynthesis of Silver Nanoparticles by Sargassum Ilicifolium (Turner) C. Agardh with their Antimicrobial Activity and Potential for Seed Germination

Suparna Roy, Anantharaman P

Correspondence Address :

Suparna Roy
Centre of Advanced Study in Marine Biology
Faculty of Marine Sciences
Annamalai University, Tamilnadu
India
Email: suparna09roy@gmail.com

Received on: December 30, 2017, Accepted on: January 10, 2018, Published on: January 25, 2018

Citation: Suparna Roy, Anantharaman P (2018). Biosynthesis of Silver Nanoparticles by Sargassum Ilicifolium (Turner) C. Agardh with their Antimicrobial Activity and Potential for Seed Germination

Copyright: 2018 Suparna Roy, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

  • Abstract

Abstract
Chemical originated Nanoparticles are recognized for their utility in various fields such as pharmaceuticals, medicine and also as bio-fertilizer, but Nanoparticles also had been reported for its toxic effect on the environment and human, so reasonably Nanoparticles are under safety concern. So, biosynthesis of silver Nanoparticles is now a leading interest in research with evaluation of their phyto-friendly nature. The aqueous extract of brown seaweed (Sargassum ilicifolium) had been used for the synthesis of silver Nanoparticles. The synthesized silver Nanoparticles were characterized using UV-visible spectroscopy, Fourier Transform Infrared (FT-IR) Spectroscopy and the morphological structure was characterized with Scanning Electron Microscopy. The antibacterial activity of green synthesized silver Nanoparticles was assayed against six human pathogenic bacteria which showed that biosynthesized silver Nanoparticles had high inhibitory activity against Escherichia coli (0.83 +/- 0.05cm), Pseudomonas aeruginosa (0.53 +/- 0.05 cm), Proteus mirabilis (0.46 +/- 0.05cm) and Klebsiella pneumoniae (0.4 +/- 0.1cm) in comparison to antibiotic Chloramphenicol (5mg/ml). The phyto-toxicity of bio- synthesized silver Nanoparticles was investigated by studying its effect on seed germination of Abelmoschus esculentus and Raphanus sativus var. longipinnatus. The seed germination test showed that the biosynthesized silver Nanoparticles had quite good promoting effect on germination of both seeds. The seed germination was 60 percent in case of Abelmoschus esculentus and seed treated with water also had 60 percent seed germination but in case of Raphanus seed, the seed germination was 100 percent in comparison to normal water treated seeds which was 60 percent. This study clearly confirmed that biosynthesized silver Nanoparticles had accelerating effect on both seed germination and consequently indicated that biosynthesized silver Nanoparticles is environmentally safe and can be used as nano-biofertilizer after further long duration treatment with plant growth and crop yield.

Keywords: Seaweed, Silver nanoparticles, Seed germination, Antibacterial activity