caa a22 4500 606181903 CHVBK 20210128100813.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s10876-014-0835-9 doi (NATIONALLICENCE)springer-10.1007/s10876-014-0835-9 Biosynthesis of Gold Nanoparticles Using Extracellular Molecules Produced by Enterobacter aerogenes and their Catalytic Study [Elektronische Daten] [B. Srinath, Ravishankar Rai] Nanoparticles of different sizes and shapes can be synthesized by physical and chemical methods. But these methods involve toxic ingredients and hazardous byproducts which may be potentially harmful to either environment or human health. Therefore in the present study, an eco-friendly simple biosynthetic route was used for the synthesis of gold nanoparticles (GNPs) using cell free extracts of Enterobacter aerogenes. The synthesis of GNPs was preliminary observed by color change and confirmed by a peak at 530-560nm using a UV-visible spectroscopy. The crystalline nature of the GNPs was confirmed by X-ray diffraction. TEM image showed the size of GNPs in the range of 4-6nm. The functional groups adhered on the surface of the GNPs was analyzed by FTIR. The variation of size, shape and dispersity with the varying gold salt concentration was studied. The synthesized GNPs exhibited good catalytic activity for the reduction of methylene blue by NaBH4. Springer Science+Business Media New York, 2015 Gold nanoparticles nationallicence Biosynthesis nationallicence Enterobacter aerogenes nationallicence Catalytic activity nationallicence Srinath B. Department of Studies in Microbiology, University of Mysore, Manasagangotri, 570 006, Mysore, Karnataka, India aut Rai Ravishankar Department of Studies in Microbiology, University of Mysore, Manasagangotri, 570 006, Mysore, Karnataka, India aut Journal of Cluster Science Springer US; http://www.springer-ny.com 26/5(2015-09-01), 1483-1494 1040-7278 26:5<1483 2015 26 10876 https://doi.org/10.1007/s10876-014-0835-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10876-014-0835-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Srinath B. Department of Studies in Microbiology, University of Mysore, Manasagangotri, 570 006, Mysore, Karnataka, India aut NATIONALLICENCE 700 1- Rai Ravishankar Department of Studies in Microbiology, University of Mysore, Manasagangotri, 570 006, Mysore, Karnataka, India aut NATIONALLICENCE 773 0- Journal of Cluster Science Springer US; http://www.springer-ny.com 26/5(2015-09-01), 1483-1494 1040-7278 26:5<1483 2015 26 10876