Synthesis of silver nanoparticles using plants extract and analysis of their antimicrobial property

Logeswari, Peter; Silambarasan, Sivagnanam; Abraham, Jayanthi

doi:10.1016/j.jscs.2012.04.007

Cited by 509 publications

(289 citation statements)

References 19 publications

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“…Biological method, there is no need to use high pressure, energy, temperature, and toxic chemical that may have adverse effect in the medical applications (Nagajyothi et al 2012). A number of living organisms are already well known to elaborate nanostructured composites such as cyanobacteria, bacteria, fungi, antinomycetes, biomolecules, and various plant materials such as Svensonia hyderobadensis (Lingarao and Savithramma 2012), Shorea tumbuggaia (Venkateswarlu et al 2010) and Thespesia populnea , Ocimum tenuiflorum, Solanum tricobatum, Syzygium cumini, Centella asiatica, and Citrus sinensis (Logeswari et al 2012). The potential of the plants as biological materials for the synthesis of nanoparticles is currently under exploitation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles from stem bark of Cochlospermum religiosum (L.) Alston: an important medicinal plant and evaluation of their antimicrobial efficacy

et al. 2014

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The use of different parts of plants for the synthesis of nanoparticles is considered as a green technology as it does not involve any harmful chemicals. Herein, we report on rapid biosynthesis of silver nanoparticles (SNPs) from aqueous stem bark extract of Cochlospermum religiosum a medicinal plant. The reduced silver nanoparticles were characterized by using UV-Visible spectroscopy (UV-Vis), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis, atomic force microscopy, and Fourier transform infrared (FT-IR). The UV-Visible spectrum of the aqueous medium containing silver nanoparticles showed an absorption peak at around 445 nm, XRD showed that the particles are crystalline in nature, with a face-centered cubic structure and the SEM images showed that the spherical-shaped silver nanoparticles were observed and the size range was found to be 20-35 nm. FT-IR spectroscopy analysis revealed that carbohydrate, polyphenols, and protein molecules were involved in the synthesis and capping of silver nanoparticles. These phytosynthesized SNPs were tested for their antimicrobial activity and it analyzed by measuring the inhibitory zone. Cochlospermum religiosum aqueous stem bark extract of SNPs showed highest toxicity to Staphylococcus followed by Pseudomonas, Escherichia coli and Bacillus and lowest toxicity towards Proteus. Whereas in fungal species highest inhibition zone against Aspergillus flavus followed by Rhizopus, Fusarium, and Curvularia, and minimum inhibition zone was observed against Aspergillus niger species. The outcome of this study could be useful for the development of value added products from indigenous medicinal plants of India for nanotechnology-based biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles from stem bark of Cochlospermum religiosum (L.) Alston: an important medicinal plant and evaluation of their antimicrobial efficacy

et al. 2014

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“…Similarly, in a recent study, they have checked the absorbance in increasing time intervals and got color change in the broth from yellow to dark brown after 24 hrs only [31]. However, in another study, they did not observe any color change after 72 hrs also indicating there was no synthesis of silver nanoparticles [27].…”

Section: Discussionmentioning

confidence: 95%

Green Synthesis and Characterization of Marine Yeast-Mediated Silver and Zinc Oxide Nanoparticles and Assessment of Their Antioxidant Activity

Aswathy

Gabylis

et al. 2017

Asian J Pharm Clin Res

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Objective: The present study focuses on the synthesis of silver and zinc oxide (ZnO) nanoparticles from marine yeasts, isolated from the sediments of the Bay of Bengal, Bakkhali coast, West Bengal, and India. Methods:The marine sediment samples were diluted through serial diution and cultured onto yeast malt agar medium by the spread plate method. The selected yeast isolates were screened for the biosynthesis of silver and ZnO nanoparticles. Characterization of both the nanoparticles was done by applying ultraviolet (UV)-visible spectroscopy, atomic force microscopy, scanning electron microscopy, and Fourier transform infrared spectroscopy.Results: A total of five marine yeasts isolates were able to synthesize silver and ZnO nanoparticles as evidence of the color change. Optical density was measured in UV-spectrometer at different time interval for the conformation of production of nanoparticles. The size of silver nanoparticle was 31.78 nm and ZnO nanoparticle was 86.27 nm. The synthesized nanoparticles are then used for antioxidant assays. Conclusions:We are concluding that marine yeast isolates SAG1 and SAG2 both are potential marine yeast isolates which can synthesize both the silver and ZnO nanoparticles. They also showed good antioxidant activity.

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“…The metal nanoparticles have free electrons, giving the SPR absorption band, due to the combined vibration of electrons of metal nanoparticles in resonance with light wave. Silver nanoparticles synthesized from plants extracts have been observed to exhibit brownish colour in aqueous solution due to SPR (Logeswari et al, 2015).…”

Section: Colour Changementioning

confidence: 99%

Surface plasmon resonance and antimicrobial properties of novel silver nanoparticles prepared from some indigenous plants in Uyo, Nigeria

Jackson¹,

Patani²,

Udosen³

2018

Afr. J. Biotechnol.

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Synthesis of nanoparticles was done by green method. Aqueous extracts of Vernonia amygdalina,Telferia occidentalis and Lasianthera africana were used as the model vegetables. Silver nitrate was used as the silver precursor, while the plant extracts served as the reducing agents and Xanthan gum (0.25, 0.5, 0.75 and 1.00% w/v) was introduced as stabilizing agents. Twelve batches of silver nanoparticles were synthesized: 0.25% V. amygdalina, 0.50% V. amygdalina, 0.75% V. amygdalina, 1.00% V. amygdalina, 0.25% T. occidentalis, 0.5% T. occidentalis, 0.75% T. occidentalis, 1.00% T. occidentalis, 0.25% L. africana, 0.50% L. africana, 0.75% L. africana, and 1.00% L. africana. The nanoparticle formation was confirmed with the visible colour change from colourless to characteristic reddish brown and the plasmon resonance peak ranges from 350 to 500 nm. The surface plasmon resonance (SPR) characteristic peak for synthesized nanoparticles gave values from 371 to 452 nm. Nanoparticles synthesized from V. amygdalina and T. occidentalis had similar (p > 0.05) peaks for the surface plasmon resonance. Nanoparticles synthesized from L. africana had the least SPR (371 nm). After 9 months of storage, SPR and colour of nanoparticles remain unchanged. The antimicrobial activities of these nanoparticles were studied against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Bacillus subtilis. They had satisfactory inhibitions against the four test microorganisms. Among the different vegetables used in the study, L. africana had the highest sensitivity.

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Synthesis of silver nanoparticles using plants extract and analysis of their antimicrobial property

Cited by 509 publications

References 19 publications

Synthesis of silver nanoparticles from stem bark of Cochlospermum religiosum (L.) Alston: an important medicinal plant and evaluation of their antimicrobial efficacy

Synthesis of silver nanoparticles from stem bark of Cochlospermum religiosum (L.) Alston: an important medicinal plant and evaluation of their antimicrobial efficacy

Green Synthesis and Characterization of Marine Yeast-Mediated Silver and Zinc Oxide Nanoparticles and Assessment of Their Antioxidant Activity

Surface plasmon resonance and antimicrobial properties of novel silver nanoparticles prepared from some indigenous plants in Uyo, Nigeria

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