Abstract
Recently, biosynthesis of nanoparticles has attracted scientist’s attention because of the use of environmentally friendly nanoparticles that do not produce toxic wastes in their process of synthesis. In this study we investigated the biosynthesis of silver nanoparticles using three fungi: Aspergillus niger, Fusarium oxysporum and Alternaria solani. These silver nanoparticles were characterized by means of UV-vis spectroscopy, scanning electron microscope (SEM). Results indicate the synthesis of silver nanoparticles in the reaction mixture. The synthesis of nanoparticles would be suitable for developing a microbial nanotechnology biosynthesis process for mass scale production. Key words: Silver nanoparticles, biosynthesis, fungi, Aspergillus.  
Highlights
Nanotechnology has recently become one of the most active research fields in Biology, Chemistry, Physics, Mathematics, Technology and Engineering which are integrated to explore benefits of the nano-world towards the betterment of the society (Koopmans and Amalia, 2010)
In this study we investigated the biosynthesis of silver nanoparticles using three fungi: Aspergillus niger, Fusarium oxysporum and Alternaria solani
In this paper we report the extracellular biosynthesis of silver nanoparticles (AgNPs) by using Altenaria solani, Fusarium oxysporum and Aspergillus niger
Summary
Nanotechnology has recently become one of the most active research fields in Biology, Chemistry, Physics, Mathematics, Technology and Engineering which are integrated to explore benefits of the nano-world towards the betterment of the society (Koopmans and Amalia, 2010). The dimension of matter important in nanoscience and nanotechnology is typically on the 0.2 to 100 nm scale (nanoscale). The properties of materials change as their size approaches the nanoscale. Different types of metal nanomaterials are being produced using silver, magnessium, oxide, copper oxide, aluminum, titanium dioxide, zinc oxide, gold and alginale (Ravishankar and Jamuna, 2011). These nanomaterials are used in various fields such as optical devices (Anderson and Moskovits, 2006), catalytic (Zhong et al, 2005), bactericidal, electronic, sensor technology, biological labelling, and treatment of some cancers and biomedical applications (Sarkar et al, 2007)
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