Downloads: 166
Research Paper | Biology | Bahrain | Volume 4 Issue 3, March 2015
Biosynthesis of Different Sizes of Silver Nanoparticles by Bacteria Screened from Cultivated Soil
Salwa Al-Thawadi | Sakina Mustafa | Mohammed Bououdina
Abstract: Biosynthesis of metal nanoparticles (NPs) is an emerging area in the field of nano-biotechnology due to their unique properties and potential applications. Bacteria which produce extracellular stable metallic silver NPs were successfully enriched from cultivated soil, Kingdom of Bahrain, in the presence of AgNO3 (100 mM). The toxic Ag+ ion was reduced to non-toxic Ag0 NPs through bacterial nitrate reductase. When examined by UV-vis spectrophotometer, the silver NPs showed maximum peak at 421 nm which remained stable for several months. The presence of those highly stable silver NPs were confirmed by XRD analysis, optical microscope, SEM and EDS. The bacterial activity was followed for 25 days in the presence of different concentrations of silver nitrate (1-256 mM). Different sizes of silver NPs ranging between 5 to 30 nm were obtained. It was found that the size of the NPs can be controlled by changing the concentration of AgNO3.
Keywords: Biosynthesis, Silver Nanoparticles, Bacteria, Uv-vis spectroscopy
Edition: Volume 4 Issue 3, March 2015,
Pages: 182 - 189
Similar Articles with Keyword 'Biosynthesis'
Downloads: 105
Research Paper, Biology, India, Volume 5 Issue 11, November 2016
Pages: 726 - 732Biosynthesis of Omega 3fatty Acids and the Activation of Anticancerous Effect in Human
Dr. Y. Thangam [11] | B. Ranchitha
Downloads: 127 | Weekly Hits: ⮙1 | Monthly Hits: ⮙1
Research Paper, Biology, India, Volume 7 Issue 10, October 2018
Pages: 1053 - 1065Optimization of Solid State Fermentation Conditions for Biosynthesis of L-Asparaginase Enzyme using Wautersiaeutropha NRRL B-2804
Yogita Labrath | Ujwala Gosavi | Vanita Nimje | Sadhana Sathaye