A comparative study of morphology, reactivity and stability of synthesized silver nanoparticles using Bacillus subtilis and Catharanthus roseus (L.) G. Don

Kannan, N.; Mukunthan, K. S.; Balaji, S.

doi:10.1016/j.colsurfb.2011.04.024

Cited by 68 publications

(32 citation statements)

References 29 publications

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“…Moreover, the biological synthesis procedure is very simple as it requires no specific conditions unlike the physical and chemical methods. The bioreduction potential of plant extracts is comparatively higher than the microbial culture filtrate, and many researchers have supported this hypothesis (Iravani 2011;Kannan et al 2011;Narayanan and Sakthivel 2010).…”

Section: Discussionmentioning

confidence: 94%

Phytosynthesis of silver nanoparticles using the leaves extract of Ficus talboti king and evaluation of antioxidant and antibacterial activities

Arunachalam

Shanmuganathan

Sasidharan

et al. 2015

Environ Sci Pollut Res

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The present study, the synthesis of silver nanoparticles (AgNPs) at 90 °C temperature using an aqueous extract from Ficus talboti leaf and the antioxidant and antibacterial activities of the AgNPs obtained. The devised method is simple and cost-effective, and it produces spherical AgNPs of size 11.9 ± 2.3 nm. The synthesized AgNPs was characterized as UV-vis spectrum and obtain a peak at 438 nm. The phytochemical study result shows that the secondary metabolites such as alkaloids, saponins, phenolic compounds, tannin, flavonoids, phytosterol, and glycosides may be responsible for reducing as well as capping silver ions into AgNPs. Transmission electron microscopic (TEM) studies of the particles revealed a dominance of spherical particle AgNPs. The face centered cubic structure of the AgNPs was confirmed by X-ray diffraction (XRD) peaks at 111°, 200°, 220°, and 311°; SAED patterns confirms the plane of silver nanoparticle planes with clear circular spots on the selected area electron diffraction (SAED). Elemental analysis was done by energy dispersive X-ray analysis (EDX). In addition, this study evaluated the in vitro antioxidant and antibacterial properties of the biosynthesized AgNPs that were found to be significant.

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Section: Discussionmentioning

confidence: 94%

Phytosynthesis of silver nanoparticles using the leaves extract of Ficus talboti king and evaluation of antioxidant and antibacterial activities

Arunachalam

Shanmuganathan

Sasidharan

et al. 2015

Environ Sci Pollut Res

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show abstract

“…Moreover, the biological synthesis procedure is very simple as it requires no specific conditions unlike the physical and chemical methods. The bioreduction potential of plant extracts is comparatively higher than the microbial culture filtrate and many researchers have supported this hypothesis (Iravani, 2011;Kannan et al, 2011;Narayanan and Sakthivel, 2010). For instance, Rosa rugosa leaves extract synthesized both silver and gold nanoparticles within 10 min (Dubey et al, 2010b).…”

Section: Advantages Of Plant Extract Mediated Nanoparticles Synthesismentioning

confidence: 94%

“…Plant extract concentration Silver nanoparticles synthesized by Bacillus subtilis were aggregated to form microparticles and were seen under light microscopy at higher magnification (400×). But the leaves extract of Catharanthus roseus produced no such microparticles of silver; instead, it produced nano-sized silver particles (Kannan et al, 2011). In an interesting study, Trachyspermum ammi seed extract has successfully synthesized silver nanoparticles; on the contrary, the seed Zargar et al (2011) extract of Papaver somniferum has failed to produce nano-sized silver particles and the reaction was found to be much slower than using T. ammi seed extract (Vijayaraghavan et al, 2012).…”

Section: Plant Extracts: Novel Bioreductants For the Biogenic Synthesmentioning

confidence: 98%

Plant extract synthesized silver nanoparticles: An ongoing source of novel biocompatible materials

Rajan

Krishnaraj

Harper

et al. 2015

Industrial Crops and Products

366

148

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“…The bioreduction potential of plant extracts is comparatively higher than the microbial and fungal methods; many researchers support this hypothesis (Iravani, 2011;Kanan et al, 2011). Researchers have reported the supremacy of green nanoparticles over several applications of polar and non polar plant extracts such as antifungal activity (Dipankar and Murugan, 2012;Singh et al, 2013), antibacterial activity (Gopinath et al, 2012;Satishkumar et al, 2012) and anticancer activities (Satyavani et al, 2011;Jacob et al, 2012).…”

Section: Light Scattering and Zeta Potentialmentioning

confidence: 83%

Green Nanotechnology: Synthesis of Silver Nanoparticles Using Aqueous Leaf Extract of Swertia chirayita

Kumar

Sinha

2017

Not Sci Biol

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In the present study the synthesis of silver nanoparticles mediated by aqueous leaf extracts of Swertia chirayita is reported. Nanoparticles are particles having diameters below 100 nm. The nanoparticles formed were characterized using Uv-Vis spectrophotometer, scanning electron microscope, Ft-IR and light scattering & Zeta potential analysis. A Surface Plasmon Resonance (SPR) peak was observed at 450 nm in Uv-Vis analysis. SEM analysis showed that the particles were spherical and cuboidal in shape and had diameter from 85-120 nm. The FT-IR analysis spectra peak were observed at 3,610.74 cm -1 , 3,089.96 cm -1 , 2,125.56 cm -1 , 166.50 cm -1 and 864.11 cm -1 , which corresponds to the presence of capping agents such as primary and secondary amines, hydroxyl compounds, flavonoids, alcoholic and phenolic compounds. The results of light scattering analysis also confirmed the formation of nanoscale particles. The zeta potential analysis showed a peak of -25 mV which demarcates the stability of the synthesized nanoparticles.

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A comparative study of morphology, reactivity and stability of synthesized silver nanoparticles using Bacillus subtilis and Catharanthus roseus (L.) G. Don

Cited by 68 publications

References 29 publications

Phytosynthesis of silver nanoparticles using the leaves extract of Ficus talboti king and evaluation of antioxidant and antibacterial activities

Phytosynthesis of silver nanoparticles using the leaves extract of Ficus talboti king and evaluation of antioxidant and antibacterial activities

Plant extract synthesized silver nanoparticles: An ongoing source of novel biocompatible materials

Green Nanotechnology: Synthesis of Silver Nanoparticles Using Aqueous Leaf Extract of Swertia chirayita

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