Silver nanoparticle production by Rhizopus stolonifer and its antibacterial activity against extended spectrum β-lactamase producing (ESBL) strains of Enterobacteriaceae

Banu, Afreen; Rathod, Vandana; Ranganath, E

doi:10.1016/j.materresbull.2011.05.008

Cited by 66 publications

(36 citation statements)

References 19 publications

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“…Under the UV region, AgNPs give a characteristic absorbance band due to the excitation mode of their surface plasmon which is dependent on the nanoparticle size (Vivek et al 2012;. The earlier reports have concluded that AgNPs production from fungi extract Rhizopus stolonifer (Banu et al 2011) and plant extract Rhizophora apiculata (Antony et al 2011) showed maximum absorbance at 422 and 423 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Toxicity assessment on haemotology, biochemical and histopathological alterations of silver nanoparticles-exposed freshwater fish Labeo rohita

2015

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The increasing use of nano based-products induces the potential hazards from their manufacture, transportation, waste disposal and management processes. In this report, we emphasized the acute toxicity of silver nanoparticles (AgNPs) using freshwater fish Labeo rohita as an aquatic animal model. The AgNPs were synthesized using chemical reduction method and the formation of AgNPs was monitored by UV-Visible spectroscopy analysis. The functional groups, crystaline nature and morphological characterizations were carried out by fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) analysis. UV-Vis range was observed at 420 nm and XRD pattern showed that the particles are crystalline nature. HRTEM analysis revealed that the morphology of particles was spherical and size ranges between 50 and 100 nm. This investigation was extended to determine the potential acute toxicity, L. rohita was treated orally with the lethal concentration (LC 50 ) of AgNPs. The antioxidative responses were studied in the three major tissues such as gill, liver and muscle of L. rohita. The results of this investigation showed that increasing the concentration of AgNPs led to bioaccumulation of AgNPs in the major tissues. The haematological parameters showed significant alterations in the treated fish. The histological changes caused by chemically synthesized AgNPs demonstrated the damages in the tissues, primary lamella and blood vessels of L. rohita. The histological study also displayed the formation of vacuolation in liver and muscle when compared with untreated tissues (control) of L. rohita.

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Section: Resultsmentioning

confidence: 99%

Toxicity assessment on haemotology, biochemical and histopathological alterations of silver nanoparticles-exposed freshwater fish Labeo rohita

2015

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“…Shivaraj et al, [2] reported biosynthesis of AgNps by change in colour to deep brown using the fungus Aspergillus flavus culture filtrate with AgNO 3 solution. Afreen et al, [5] also reported synthesis of AgNps by Rhizopus stolonifer and also reported the increase in colour intensity of AgNps was due to increased number of nanoparticles formed in the reaction mixture. Verma et al, [21] reported biosynthesis of AgNps by Aspergillus clavatus an endophytic fungus isolated from sterilized stem tissues of Azadirachta indica.…”

Section: Extracellular Synthesis Of Silver Nanoparticlesmentioning

confidence: 94%

“…The intensity of the colour was increased with the period of incubation. The appearance of the brown colour was due to the excitation of SPR [5]. Shivaraj et al, [2] reported biosynthesis of AgNps by change in colour to deep brown using the fungus Aspergillus flavus culture filtrate with AgNO 3 solution.…”

Section: Extracellular Synthesis Of Silver Nanoparticlesmentioning

confidence: 99%

“…isolated from leaves of Syzygium cumini. Afreen et al, [5] revealed spherical shaped AgNps with the size ranging between 3 and 20 nm by R. stolonifer. Sophiya Devi et al, [22] revealed synthesis of AgNps with distinct shape and size.…”

Section: Transmission Electron Microscopy (Tem)mentioning

confidence: 99%

“…Synthesis of AgNps by biological route is easy conventional method compared with chemical, physical, and photochemical methods. As these methods are capital intensive, toxic and non ecofriendly, a biological synthesis of AgNps with the help of plants and microorganisms including bacteria, actinomycetes, algae, and fungi, which has been realized globally due to its ecofriendly, cost effective and biocompatible synthesis, which has made the researchers to exploit the biological sources as nanofactories [5,6,7]. Fungal mediated synthesis of AgNps is determined nowadays because of their reception towards higher bioaccumulation, easy and simple scale up method, economic viability, compared to other synthesis procedures from bacteria, actinomycetes, algae, and plants.…”

Section: Introductionmentioning

confidence: 99%

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A Study on Extracellular Synthesis of Silver Nanoparticles from Endophytic Fungi, Isolated from Ethanomedicinal Plants <i>Curcuma longa</i> and <i>Catharanthus roseus</i>

Singh

Rathod

Singh

et al. 2016

ILNS

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Abstract. Biological method is considered as eco-friendly and reliable process for the synthesis of silver nanoparticles (AgNps) in the field of nanotechnology due to its tremendous applications in various fields. In this study we have isolated a total of twelve endophytic fungi from leaves of Curcuma longa (turmeric) and Catharanthus roseus out of which six endophytic fungi showed their ability to synthesized AgNps from silver nitrate (AgNO 3) solution which splits into a positive silver ion (Ag + ) and a negative nitrate ion (NO 3 -) in order to turn the silver ions into solid silver (Agº). Of the six positive endophytic fungi VRD2 showed good and encouraging results and was identified as Penicillium spinulosum VRD2. UV-Visible Spectroscopy confirms the AgNps showing maximum peak at 425nm implying the bioreduction of AgNO 3 . Transmission Electron Microscopy (TEM) revealed the particle are spherical and well dispersed without agglomeration size ranging from 25-30nm.

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Extremophiles and Biosynthesis of Nanoparticles

2015

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Silver nanoparticle production by Rhizopus stolonifer and its antibacterial activity against extended spectrum β-lactamase producing (ESBL) strains of Enterobacteriaceae

Cited by 66 publications

References 19 publications

Toxicity assessment on haemotology, biochemical and histopathological alterations of silver nanoparticles-exposed freshwater fish Labeo rohita

Toxicity assessment on haemotology, biochemical and histopathological alterations of silver nanoparticles-exposed freshwater fish Labeo rohita

A Study on Extracellular Synthesis of Silver Nanoparticles from Endophytic Fungi, Isolated from Ethanomedicinal Plants <i>Curcuma longa</i> and <i>Catharanthus roseus</i>

Extremophiles and Biosynthesis of Nanoparticles

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