Extracellular biosynthesis of silver nanoparticles using the fungus Fusarium semitectum

Basavaraja, S.; Balaji, S.; Lagashetty, Arunkumar; Rajasab, A. H.; Venkataraman, A.

doi:10.1016/j.materresbull.2007.06.020

Cited by 501 publications

(193 citation statements)

References 19 publications

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“…The phytosynthesis approach has many advantages over chemical, physical, and microbial synthesis [15][16][17][18], as there is no need of the elaborated process of culturing and maintaining the cell, hazardous chemicals and highenergy requirements.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Solanum nigrum-mediated silver nanoparticles and its protective effect on alloxan-induced diabetic rats

Sudalai¹,

Aravinthan

Sudhakar³

et al. 2015

J Nanostruct Chem

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Solanum nigrum, a medicinal plant, traditionally used in treating diabetes mellitus. In this study, we used the leaf extract of the plant to synthesize silver nanoparticles (AgNPs), as a proposition to treat alloxaninduced diabetic rats. The phytosynthesised AgNPs were analyzed using UV-visible and Fourier transform infra-red spectroscopy for their functional groups. Transmission electron microscopy revealed that, the synthesized particles are found to be 4-25 nm in size. Monodispersed and spherical nature of synthesized AgNPs were shown by scanning electron microscope and the presence of Ag in the AgNPs was confirmed by energy dispersive spectrum. The phytosynthesised AgNPs were evaluated for its antidiabetic activity in alloxan-induced diabetic rats. AgNPs-treated diabetic rats found to be significantly improved the dyslipidemic condition as seen in the diabetic control. Furthermore, it also reduced the blood glucose level over the period of treatment. The improvement in body weight was also found to be evidence for S. nigrum extract-mediated AgNPs as a potential antidiabetic agent against alloxaninduced diabetic rats.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Solanum nigrum-mediated silver nanoparticles and its protective effect on alloxan-induced diabetic rats

Sudalai¹,

Aravinthan

Sudhakar³

et al. 2015

J Nanostruct Chem

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“…Figure 1 shows the UV-vis spectra recorded from the aqueous chloroauric acid-extracellular filtrate of the F. semitectum biomass reaction medium as a function of reaction time. From figure 1, it is inferred that the band corresponding to the surface plasmon resonance occurs at 545 nm [24] the alloy nanoparticles are also on the same 2θ values of the Ag and Au patterns [22,24,25].…”

Section: Resultsmentioning

confidence: 89%

“…We have envisaged the extracellular biosynthesis and stabilization of AuNP and Au-AgNP from the fungus F. semitectum. The local environment is suitable for developing this non-pathogenic saprobe and it is also commonly available in marshland regions [22].…”

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

105

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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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“…The peak at 1636.17cm -1 is due to the carbonyl stretch vibrations in the amide linkages of proteins (Basavaraja et al, 2008). These groups may be between amino acid residues in protein and synthesized AgNPs.…”

Section: Resultsmentioning

confidence: 99%

Stachybotrys chartarum: A Novel Biological Agent for The Extracellular Synthesis of Silver Nanoparticles and Their Antimicrobial Activity

Mohamed¹

2015

IJBiotech

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Microbial assisted biosynthesis of nanoparticles is a rapidly progressing area of nanobiotechnology. In this paper Stachybotrys chartarum assisted extracellular synthesis of silver nanoparticles (AgNPs) is reported when challenged with 1mM silver nitrate (AgNO 3 ). The characterization of AgNPs was carried out visual observation and UV-Vis spectrophotometry. Further analysis carried out by Fourier Transform Infrared Spectroscopy (FTIR), provides evidence for the presence of proteins as capping agent, which helps in increasing the stability of the synthesized AgNPs. Transmission Electron Microscopy (TEM) investigations confi rmed that AgNPs were formed. The synthesized silver nanoparticles were found in the range of 65-108 nm. Finally, the antimicrobial susceptibility of AgNPs synthesized was investigated which exhibited more potent activity against bacteria than fungi compared with using silver nitrate at concentration 1mM.

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Extracellular biosynthesis of silver nanoparticles using the fungus Fusarium semitectum

Cited by 501 publications

References 19 publications

Synthesis and characterization of Solanum nigrum-mediated silver nanoparticles and its protective effect on alloxan-induced diabetic rats

Synthesis and characterization of Solanum nigrum-mediated silver nanoparticles and its protective effect on alloxan-induced diabetic rats

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

Stachybotrys chartarum: A Novel Biological Agent for The Extracellular Synthesis of Silver Nanoparticles and Their Antimicrobial Activity

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