Cinnamon zeylanicum bark extract and powder mediated green synthesis of nano-crystalline silver particles and its bactericidal activity

Sathishkumar, M.; Krishnamurthy, S.; Won, Sangchul; Cho, Chul-Woong; Kim, Seo-Young; Yun, Yeoung‐Sang

doi:10.1016/j.colsurfb.2009.06.005

Cited by 873 publications

(444 citation statements)

References 28 publications

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“…The increase in the SPR band with decreasing AgNO 3 /lichen ratio represents the higher production of Ag nanoparticles, which is due to the availability of more reducing biomolecules for the reduction of Ag ions. The higher Ag nanoparticles' size is obtained at high AgNO 3 / lichen ratio due to the lack of biomolecules [35]. Figures 2-4 show representative TEM images and the corresponding size distribution histogram of Ag nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Investigation of lichen based green synthesis of silver nanoparticles with response surface methodology

Yıldız

Ateş

Yılmaz

et al. 2014

Green Processing and Synthesis

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Abstract:In this study, silver (Ag) nanoparticles were successfully biosynthesized from AgNO 3 through a simple green route using the lichen extract [Cetraria islandica (L) Ach] as a reducing and stabilizing agent. The mean sizes of spherical Ag nanoparticles with diameters ranging from 5 nm to 29 nm were obtained at different reaction conditions. The nanoparticles were characterized using transmission electron microscopy (TEM), energy dispersive X-ray (EDX), ultraviolet-visible (UV-VIS) and Fourier transform infrared spectroscopy (FTIR) techniques. Response surface methodology (RSM) was used to investigate the effects of temperature, reaction time and AgNO 3 /lichen ratio on green synthesis of Ag nanoparticles. The results showed that the increase in reaction time and AgNO 3 / lichen ratio caused a decrease of particle size and the increase in temperature resulted in bigger particles.

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Section: Resultsmentioning

confidence: 99%

Investigation of lichen based green synthesis of silver nanoparticles with response surface methodology

Yıldız

Ateş

Yılmaz

et al. 2014

Green Processing and Synthesis

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show abstract

“…The positive charge of a silver ion is critical for antimicrobial activity, allowing electrostatic attraction between the negative charges of the bacterial cell membrane and positively charged silver particles causing cell membrane rupturing [17,[20][21][22] . Low concentrations of silver ions were demonstrated to have the ability to induce a massive proton leakage through the bacterial membrane causing subsequent cell death [23,24] .…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial effects of silver zeolite, silver zirconium phosphate silicate and silver zirconium phosphate against oral microorganisms

Saengmee-anupharb

Srikhirin

Thaweboon

et al. 2013

Asian Pacific Journal of Tropical Biomedicine

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“…The widespread cases of multidrug resistant bacteria against the standard antibiotics have led scientists to potentially incorporate AgNPs and other nanomaterials as ingredient to enhance the antibiotic efficacy (Ali et al, 2016). In some cases, all the microbes were all eliminated (Sathishkumar et al, 2009). There have been several proposed mechanisms on how AgNPs work as antibacterial, although the exact mechanism is still unknown.…”

Section: Antimicrobial Studiesmentioning

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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Cinnamon zeylanicum bark extract and powder mediated green synthesis of nano-crystalline silver particles and its bactericidal activity

Cited by 873 publications

References 28 publications

Investigation of lichen based green synthesis of silver nanoparticles with response surface methodology

Investigation of lichen based green synthesis of silver nanoparticles with response surface methodology

Antimicrobial effects of silver zeolite, silver zirconium phosphate silicate and silver zirconium phosphate against oral microorganisms

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

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