Extracellular Synthesis of Gold Nanoparticles by the Fungus Fusarium oxysporum

Mukherjee, Priyabrata; Senapati, Satyajyoti; Mandal, Deendayal; Ahmad, Absar; Khan, M. Islam; Kumar, Rajiv; Sastry, Murali

doi:10.1002/1439-7633(20020503)3:5<461::aid-cbic461>3.0.co;2-x

Cited by 604 publications

(320 citation statements)

References 10 publications

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“…There are reports of using different groups of microorganisms such as yeast, bacteria, fungi, and actinomycetes for the synthesis of nanoparticles. A few examples include, Aspergillus fumigatus (Ag nanoparticle), Pseudomonas aeruginosa (Au nanoparticle), Candida glabrata (cadmium nanoparticle), and Fusarium oxysporum (silver, gold, and zirconia nanoparticles) [9][10][11][12]. Nanoparticles synthesized biologically are multifunctional with diverse applications in biomedical field such as in therapeutics [13], tissue regeneration [14], drug delivery systems [15], separation techniques [16], and cancer therapy.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis and Characterization of Marine Yeast-Mediated Silver and Zinc Oxide Nanoparticles and Assessment of Their Antioxidant Activity

Aswathy

Gabylis

et al. 2017

Asian J Pharm Clin Res

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Objective: The present study focuses on the synthesis of silver and zinc oxide (ZnO) nanoparticles from marine yeasts, isolated from the sediments of the Bay of Bengal, Bakkhali coast, West Bengal, and India. Methods:The marine sediment samples were diluted through serial diution and cultured onto yeast malt agar medium by the spread plate method. The selected yeast isolates were screened for the biosynthesis of silver and ZnO nanoparticles. Characterization of both the nanoparticles was done by applying ultraviolet (UV)-visible spectroscopy, atomic force microscopy, scanning electron microscopy, and Fourier transform infrared spectroscopy.Results: A total of five marine yeasts isolates were able to synthesize silver and ZnO nanoparticles as evidence of the color change. Optical density was measured in UV-spectrometer at different time interval for the conformation of production of nanoparticles. The size of silver nanoparticle was 31.78 nm and ZnO nanoparticle was 86.27 nm. The synthesized nanoparticles are then used for antioxidant assays. Conclusions:We are concluding that marine yeast isolates SAG1 and SAG2 both are potential marine yeast isolates which can synthesize both the silver and ZnO nanoparticles. They also showed good antioxidant activity.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis and Characterization of Marine Yeast-Mediated Silver and Zinc Oxide Nanoparticles and Assessment of Their Antioxidant Activity

Aswathy

Gabylis

et al. 2017

Asian J Pharm Clin Res

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“…The benefits of using a biological synthesis system range from the predictable production of uniform metal nanoparticles due to the highly structured activities of microbial cells to environmentally friendly production methods and the ability to produce nanoparticles with unique shapes and composition [18][19][20]. It is therefore important to gain an understanding of the mechanism of gold accumulation and reduction by bacterial cells on a molecular and cellular level.…”

Section: Introductionmentioning

confidence: 99%

Gold nanoparticle synthesis using the thermophilic bacterium Thermus scotoductus SA-01 and the purification and characterization of its unusual gold reducing protein

et al. 2014

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Nanoparticles are very important materials for implementing nanotechnology in diverse areas and are abundant in nature as living organisms operate at a nanoscale. As nanoparticles exhibit interesting size-and shape-dependent physical and chemical properties, the synthesis of uniform nanoparticles with controlled sizes and shapes is of great importance. Nanoparticles are the end products of a wide variety of physical, chemical and biological processes, some of which are novel and radically different and others of which are quite commonplace. The ability to produce nanoparticles with specific shapes and controlled sizes could result in interesting new applications that can potentially be utilized in areas such as optics, electronics and the biomedical field. In the present study, we have demonstrated the ability of the thermophilic bacterium Thermus scotoductus SA-01 to synthesize gold nanoparticles and determined the effect of the physico-chemical parameters on particle synthesis. Furthermore, a protein purified from this bacterium is shown to be capable of reducing HAuCl 4 to form elemental nanoparticles in vitro. The protein was purified to homogeneity and identified through N-terminal sequencing as an ABC transporter, peptidebinding protein. It is speculated that this protein reduces Au(III) through an electron shuttle mechanism involving a cysteine disulphide bridge. Through manipulation of physico-chemical parameters, it was possible to vary nanoparticles in terms of number, shape and size. This is the first report of a transporter protein from a thermophile with the ability to produce nanoparticles in vitro thus expanding the limited knowledge around biological gold nanoparticle synthesis.

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“…As an example, a dense assembly of nanoparticles on filamentous fungi [8] with typical hyphal diameters of a few micrometers (varying from species to species) and lengths varying from tens of micrometers to a few millimeters could find immediate applications as circuit components. The crystallization and stability of Au nanoclusters [9] have been a subject of extensive experimental and theoretical study recently, owing to their promising electronic, optical, biological, catalytic, and magnetic properties. These nanoclusters can exist in a variety of diverse [10,11] structural forms, including spherical with an internal crystalline [12] FCC core, icosahedral ICO, decahedral DEC, and FCC.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis and stabilization of Au and Au–Ag alloy nanoparticles by fungus,Fusarium semitectum

Sawle

Salimath

Deshpande

et al. 2008

Science and Technology of Advanced Materials

108

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Crystallized and spherical-shaped Au and Au-Ag alloy nanoparticles have been synthesized and stabilized using a fungus, F. semitectum in an aqueous system. Aqueous solutions of chloroaurate ions for Au and chloroaurate and Ag + ions (1 : 1 ratio) for Au-Ag alloy were treated with an extracellular filtrate of F. semitectum biomass for the formation of Au nanoparticles (AuNP) and Au-Ag alloy nanoparticles (Au-AgNP). Analysis of the feasibility of the biosynthesized nanoparticles and core-shell alloy nanoparticles from fungal strains is particularly significant. The resultant colloidal suspensions are highly stable for many weeks. The obtained Au and Au-Ag alloy nanoparticles were characterized by the surface plasmon resonance (SPR) peaks using a UV-vis spectrophotometer, and the structure, morphology and size were determined by Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), and transmission electron microscopy (TEM). Possible optoelectronics and medical applications of these nanoparticles are envisaged.

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Extracellular Synthesis of Gold Nanoparticles by the Fungus Fusarium oxysporum

Cited by 604 publications

References 10 publications

Green Synthesis and Characterization of Marine Yeast-Mediated Silver and Zinc Oxide Nanoparticles and Assessment of Their Antioxidant Activity

Green Synthesis and Characterization of Marine Yeast-Mediated Silver and Zinc Oxide Nanoparticles and Assessment of Their Antioxidant Activity

Gold nanoparticle synthesis using the thermophilic bacterium Thermus scotoductus SA-01 and the purification and characterization of its unusual gold reducing protein

Biosynthesis and stabilization of Au and Au–Ag alloy nanoparticles by fungus,Fusarium semitectum

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