1 23 World Journal of Microbiology and Biotechnology ISSN 0959-3993 Volume 30 Number 2 World J Microbiol Biotechnol (2014) 30:693-704 DOI 10.1007/s11274-013-1417-y Extracellular biosynthesis of silver nanoparticles using a novel and non-pathogenic fungus, Neurospora intermedia: controlled synthesis and antibacterial activity Sepideh Hamedi, Seyed Abbas Shojaosadati, Soheila Shokrollahzadeh & Sameereh Hashemi-Najafabadi