Comparative evaluation of antibacterial activity of silver nanoparticles synthesized using Rhizophora apiculata and glucose

Antony, Jacob Joe; Sivalingam, Periyasamy; Siva, Durairaj; Kamalakkannan, Soundararajan; Anbarasu, Kumarasamy; Sukirtha, Raman; Krishnan, Muthukalingan; Achiraman, Shanmugam

doi:10.1016/j.colsurfb.2011.06.022

Cited by 127 publications

(45 citation statements)

References 25 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: 98%

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: 98%

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

2015

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“…The 1% A. leucophloea aqueous extract silver organosol was prepared with milli-Q deionized water (EMD Millipore, Billerica, MA, USA), incubated at 60°C for 5 minutes, 15 and used for the bioreduction of the silver nitrate (AgNO 3 ) starting material (Sigma-Aldrich Co., St Louis, MO, USA). About 5 mL of the organosol was added to 95 mL of 1 Mm aqueous AgNO 3 solution, and the mixture was heated gradually in a water bath at temperatures varying between 30°C and 95°C.…”

Section: Biogenic Synthesis Of Agnpsmentioning

confidence: 99%

“…3 The visually observed color change from dark brown to yellowish brown during the bioreductive AgNP formation upon adding A. leucophloea extract may be due to the reduction of silver ions. 15 The UV-Vis spectroscopy measurements of the bioreductive formation of AgNPs via reduction during the addition of A. leucophloea reveals a weak surface plasmon resonance from the leaf extract centered at 359 nm, and a peak characteristic of AgNPs at 433 nm. Mondal et al 18 made similar observations while synthesizing AgNPs using extracts of various medicinal plants.…”

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confidence: 99%

Biosynthesis of silver nanoparticles using Acacia leucophloea extract and their antibacterial activity

Murugan¹,

Balakrishnan²,

Duraisamy³

et al. 2014

IJN

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The immense potential of nanobiotechnology makes it an intensely researched field in modern medicine. Green nanomaterial synthesis techniques for medicinal applications are desired because of their biocompatibility and lack of toxic byproducts. We report the toxic byproducts free phytosynthesis of stable silver nanoparticles (AgNPs) using the bark extract of the traditional medicinal plant Acacia leucophloea (Fabaceae). Visual observation, ultraviolet–visible spectroscopy, and transmission electron microscopy (TEM) were used to characterize the synthesized AgNPs. The visible yellow-brown color formation and surface plasmon resonance at 440 nm indicates the biosynthesis of AgNP. The TEM images show polydisperse, mostly spherical AgNP particles of 17–29 nm. Fourier transform infrared spectroscopy revealed that primary amines, aldehyde/ketone, aromatic, azo, and nitro compounds of the A. leucophloea extract may participate in the bioreduction and capping of the formed AgNPs. X-ray diffraction confirmed the crystallinity of the AgNPs. The in vitro agar well diffusion method confirmed the potential antibacterial activity of the plant extract and synthesized AgNPs against the common bacterial pathogens Staphylococcus aureus (MTCC 737), Bacillus cereus (MTCC 1272), Listeria monocytogenes (MTCC 657), and Shigella flexneri (MTCC 1475). This research combines the inherent antimicrobial activity of silver metals with the A. leucophloea extract, yielding antibacterial activity-enhanced AgNPs. This new biomimetic approach using traditional medicinal plant ( A. leucophloea ) barks to synthesize biocompatible antibacterial AgNPs could easily be scaled up for additional biomedical applications. These polydisperse AgNPs green-synthesized via A. leucophloea bark extract can readily be used in many applications not requiring high uniformity in particle size or shape.

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“…20 The latter has emerged as a green alternative, for it is environment-friendly, cost-effective, and easily scaled-up. It has great potential with natural reductants, 21,22 such as plants' extract, 23 bacteria, 24 and fungus. 25 Plant extracts are more advantageous because using them eliminates the elaborate process of maintaining cell cultures and can be suitably scaled-up for large-scale production under nonaseptic environments.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles by Chrysanthemum morifolium Ramat. extract and their application in clinical ultrasound gel

He¹,

Du²,

Lv³

et al. 2013

IJN

146

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Eco-friendly green synthesis with plant extracts plays a very important role in nanotechnology, without any harmful chemicals. In this report, the synthesis of water-soluble silver nanoparticles was developed by treating silver ions with Chrysanthemum morifolium Ramat. extract at room temperature. The effect of the extract on the formation of silver nanoparticles was characterized by ultraviolet and visible absorption spectroscopy, X-ray diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy. The ultraviolet and visible absorption spectroscopy results show a strong resonance centered on the surface of silver nanoparticles (AgNP) at 430 nm. The Fourier transform infrared spectroscopy spectral study demonstrates Chrysanthemum morifolium Ramat. extract acted as the reducing and stabilizing agent during the synthesis. The X-ray diffraction analysis confirmed that the synthesized AgNP are single crystallines, corresponding with the result of transmission electron microscopy. Water-soluble AgNP, with an approximate size of 20 nm-50 nm were also observed in the transmission electron microscopy image. The bactericidal properties of the synthesized AgNP were investigated using the agar-dilution method and the growth-inhibition test. The results show the AgNP had potent bactericidal activity on Staphylococcus aureus and Escherichia coli, as well as a strong antibacterial activity against gram-negative bacteria, as compared to gram-positive bacteria with a dose-dependent effect, thus providing a clinical ultrasound gel with bactericidal property for prevention of cross infections.

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Comparative evaluation of antibacterial activity of silver nanoparticles synthesized using Rhizophora apiculata and glucose

Cited by 127 publications

References 25 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

Biosynthesis of silver nanoparticles using Acacia leucophloea extract and their antibacterial activity

Green synthesis of silver nanoparticles by Chrysanthemum morifolium Ramat. extract and their application in clinical ultrasound gel

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