Catharanthus roseus: a natural source for the synthesis of silver nanoparticles

Mukunthan, K. S.; Elumalai, E. K.; Patel, Trupti; Murty, V. Ramachandra

doi:10.1016/s2221-1691(11)60041-5

Cited by 170 publications

(84 citation statements)

References 24 publications

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“…Hence, the terpenoids are proved to have good potential activity to convert the aldehyde groups to carboxylic acids in the metal ions. Further, amide groups are also responsible for the presence of the enzymes and these enzymes are responsible for the reduction synthesis and stabilization of the metal ions, further, polyphenols are also proved to have potential reducing agent in the synthesis of the silver nanoparticles (Asmathunisha et al 2010;Prasad and Elumalai 2011;Mukunthan et al 2011). Previously, Baun et al (2008) reported that, the toxicity of C60-carbon nanotubes and titanium dioxide to an aquatic invertebrate Daphnia magna.…”

Section: Discussionmentioning

confidence: 99%

Biosynthesis of silver nanoparticles from mangrove plant (Avicennia marina) extract and their potential mosquito larvicidal property

2014

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To identify the larvicidal activities of silver nanoparticles synthesised with Avicennia marina leaf extract against the larvae of Aedes aegypti and Anopheleus stephensi, in vitro larvicidal activities such as LC 50 and LC 90 were assessed. Further, characterisation such as UV and FTIR analysis were carried out for the synthesised silver nanoparticles. The LC 50 value of the synthesised silver nanoparticles was identified as 4.374 and 7.406 mg/L for An. stephensi and Ae. aegypti larvae respectively. Further, the LC 90 values are also identified as 4.928 and 9.865 mg/L for An. stephensi and Ae. aegypti species respectively. The synthesised silver nanoparticles have maximum absorption at 420 nm with the average size of 60-95 nm. The FTIR data showed prominent peaks in

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Section: Discussionmentioning

confidence: 99%

Biosynthesis of silver nanoparticles from mangrove plant (Avicennia marina) extract and their potential mosquito larvicidal property

2014

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“…The antimicrobial activity experiments were carried out under high ascetic condition. The method of agar well diffusion assay was employed to investigate the antimicrobial activity of silver nanoparticles (Mukunthan et al 2011). The tested micro-organisms were seeded in the nutrient agar plates, and then six 4-mm diameter paper discs were saturated with 5, 10 lg/ml AgNPs aqueous solution, Chloramphenicol (0.2 mg/ml), ketoconazole (0.5 mg/ml), A. muricata aqueous extract and double distilled water (control), respectively.…”

Section: Microorganismsmentioning

confidence: 99%

Green synthesis and characterization of monodispersed silver nanoparticles using root bark aqueous extract of Annona muricata Linn and their antimicrobial activity

2017

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In recent time, various phytosynthetic methods have been employed for the fabrication of silver nanoparticles; these unique metal nanoparticles are used in several applications which include pharmaceuticals and material engineering. The current research reports a rapid and simple synthetic partway for silver nanoparticles (AgNPs) using root bark aqueous extract of Annona muricata and the evaluation of its antimicrobial efficacy against pathogenic microorganisms. The root bark extract was treated with aqueous silver nitrate solution. Silver ions were reduced to silver atoms which on aggregation gave Silver nanoparticles; the biosynthesized AgNPs were characteristically spherical, discreet and stabilized by phytochemical entities and were characterized using ultraviolet visible spectroscopy, transmission electron microscope (TEM) and photon correlation microscopy. The aqueous plant extractAgNPs suspension was subjected to Fourier transform infrared spectroscopy. TEM result for the average particle size is 22 ± 2 nm. The polydispersity index and zeta-potential were found to be 0.44 ± 0.02 and -27.90 ± 0.01 mV, respectively (Zeta-Sizer). The antimicrobial evaluation result showed that the synthesized silver nanoparticles at different concentration were very active against the Gram-positive bacteria (B. subtilis, S. aureous) and Gram-negative bacteria (K. Pneumonia, E. Coli and Pseudomonas aeruginosa), P. aeruginosa being most susceptible to the anti microbial effect of the silver nanoparticles. Stable silver nanoparticles with antimicrobial activity were obtained through biosynthesis.

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“…Morphological analysis and the crystalline nature of the particles were investigated by transmission electron microscopy (TEM) using FEI Tecnai TF 20 high-resolution TEM instrument operated at an accelerating voltage of 200 kV [20]. The characterization of the synthesized AgNPs was conducted with X-ray diffractometer (XPERT-Pro diffractometer using Cu K a radiation), operated at 2h from 30 to 80°at 0.041°/min with a time constant of 2 s. AgNPs synthesis and the elemental composition were further confirmed by SEM-EDS (SEM-EDS; JEOL-64000, Japan).…”

Section: Characterization Of Agnpsmentioning

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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Catharanthus roseus: a natural source for the synthesis of silver nanoparticles

Cited by 170 publications

References 24 publications

Biosynthesis of silver nanoparticles from mangrove plant (Avicennia marina) extract and their potential mosquito larvicidal property

Biosynthesis of silver nanoparticles from mangrove plant (Avicennia marina) extract and their potential mosquito larvicidal property

Green synthesis and characterization of monodispersed silver nanoparticles using root bark aqueous extract of Annona muricata Linn and their antimicrobial activity

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

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