期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
期号：ICIET
页码：1111
出版社：S&S Publications
摘要：The present study demonstrates greenprocess for the synthesis of Silver nanoparticles (AgNPs)by bacteria Pseudomonas aeruginosa AMB AS7 and therole of biosurfactant in enhancing the stability of AgNPs.An aqueous solution of silver nitrate was treated with bothcell free broth and biomass of P. aeruginosa AMB AS7which resulted in the synthesis of AgNPs. Thenanometallic dispersions were characterized by surfaceplasmon spectrum measuring at a range of 280 to 700nm.The particle distribution analysis and Scanning ElectronMicroscopic (SEM) results showed the formation ofAgNPs in the range of 30 – 80 nm. Further analysiscarried out by Fourier Transform Infrared Spectroscopy(FTIR) showed the presence of functional groups fromproteins and biosurfactant. The stability of AgNPssynthesised by both chemical and biological methods wasanalysed. Biological method of AgNPs synthesis showedremarkable stability. They were stable for 24 dayswhereas AgNPs synthesised by chemical method werestable for only 3 days. Also the influence of biosurfactantand chemical surfactant on the stability of AgNPssynthesized by chemical method was analyzed. Thebiosurfactant showed superior property (19 days) over thechemical surfactant (7 days) in terms of increasing thestability of AgNPs. The use of bacterium for nanoparticlessynthesis and the influence of biosurfactant on thestability of AgNPs offer the benefits of eco-friendlinessand amenability for large-scale production
