@article{nnr2015312,
author={{Shivashankarappa, Aishwarya and Sanjay, K R},
title={Study on Biological Synthesis of Cadmium Sulfide Nanoparticles by <i>Bacillus licheniformis</i> and Its Antimicrobial Properties against Food Borne Pathogens},
journal={Nanoscience and Nanotechnology Research},
volume={3},
number={1},
pages={6--15},
year={2015},
url={http://pubs.sciepub.com/nnr/3/1/2},
issn={2372-4676},
abstract={The green synthesis of cadmium sulfide (CdS) nanoparticles has been regarded as the most promising technique for their prospective applications in biological system. The bacterial strain <i>Bacillus licheniformis</i> has shown to be efficient in synthesizing cadmium sulfide nanoparticles. We report the effect on nanocrystal formation by varying the ratios of cadmium chloride and sodium sulfide ranging from 1:1, 2:1, 3:1 and 4:1 respectively. The resultant CdS nanoparticles was tested for antimicrobial activity against a range of food borne bacteria <i>E coli</i>, <i>Bacillus licheniformis</i>, <i>Pseudomonas aeruginosa</i>, <i>Bacillus cereus</i> and <i>Staphylococcus aureus </i>and fungi <i>Fusarium oxysporum</i>, <i>Aspergillus flavus</i> and <i>Penicillium expansum. </i>The results showed that the CdS nanoparticles were crystalline in nature with size varying from 20-40 nm. The stability of nanoparticles was due to protein interaction which may have played an important role as capping agents. The antimicrobial activity showed that the CdS nanoparticles of ratio 4:1 of cadmium chloride and sodium sulfide at a concentration of 40 mg/ml showed highest zone of inhibition in <i>Psedomonas aeruginosa</i> (26.5¡À0.70) and A<i>spergillus flavus</i> (27.8¡À0.28). The present study explains a simple, cost effective way of nanoparticle synthesis suitable for large scale production. The green synthesis approach extends the horizon of applications to biological systems as an effective medicinal agent.},
doi={10.12691/nnr-3-1-2}
publisher={Science and Education Publishing}
}