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Open AccessArticle

Fungus-Mediated Green Synthesis of Silver Nanoparticles Using Aspergillus terreus

1
Department of Pathogenobiology, Norman Bethune College of Medicine, Jilin University Mycology Research Center, Jilin University, Changchun 130021, China
2
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
3
Medical Mycology Research Center, Chiba University, Chiba 260-8673, Japan
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2012, 13(1), 466-476; https://doi.org/10.3390/ijms13010466
Received: 8 November 2011 / Revised: 23 November 2011 / Accepted: 15 December 2011 / Published: 29 December 2011
(This article belongs to the Section Green Chemistry)
The biosynthesis of nanoparticles has received increasing attention due to the growing need to develop safe, cost-effective and environmentally friendly technologies for nano-materials synthesis. In this report, silver nanoparticles (AgNPs) were synthesized using a reduction of aqueous Ag+ ion with the culture supernatants of Aspergillus terreus. The reaction occurred at ambient temperature and in a few hours. The bioreduction of AgNPs was monitored by ultraviolet-visible spectroscopy, and the AgNPs obtained were characterized by transmission electron microscopy and X-ray diffraction. The synthesized AgNPs were polydispersed spherical particles ranging in size from 1 to 20 nm and stabilized in the solution. Reduced nicotinamide adenine dinucleotide (NADH) was found to be an important reducing agent for the biosynthesis, and the formation of AgNPs might be an enzyme-mediated extracellular reaction process. Furthermore, the antimicrobial potential of AgNPs was systematically evaluated. The synthesized AgNPs could efficiently inhibit various pathogenic organisms, including bacteria and fungi. The current research opens a new avenue for the green synthesis of nano-materials. View Full-Text
Keywords: silver nanoparticles; Aspergillus terreus; biosynthesis; NADH silver nanoparticles; Aspergillus terreus; biosynthesis; NADH
MDPI and ACS Style

Li, G.; He, D.; Qian, Y.; Guan, B.; Gao, S.; Cui, Y.; Yokoyama, K.; Wang, L. Fungus-Mediated Green Synthesis of Silver Nanoparticles Using Aspergillus terreus. Int. J. Mol. Sci. 2012, 13, 466-476.

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