Synthesis, characterization and studies on antioxidant activity of silver nanoparticles using Asphodelus aestivus Brot. aerial part extract

Fafal, Tuğçe; Taştan, Pelin; Tüzün, Burcu Sümer; Özyazıcı, Mine; Kıvçak, Bijen

doi:10.1016/j.sajb.2017.06.019

Cited by 68 publications

(32 citation statements)

References 31 publications

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“…The free radical activity of our prepared AgNPs in comparison to control showed higher free radical activity. Most importantly, our prepared AgNPs showed admirable free radical activity with 66% DPPH scavenging capability ( Figure 7), which are comparable to the recently reported Asphodelus aestivus-synthesized AgNPs [63]. The antioxidant activity of aqueous extract shows lower free radical activity than previously reported plant extract [64].…”

Section: Discussionsupporting

confidence: 86%

Characterizations and analysis of the antioxidant, antimicrobial, and dye reduction ability of green synthesized silver nanoparticles

Riaz

Ismail

Ahmad

et al. 2020

Green Processing and Synthesis

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The current study was conducted to assess the potential of ginger rhizome extract (Zingiber officinale) for the synthesis of silver nanoparticles (AgNPs) through the green method and its mitigating activity against pathogenic bacterial strains. AgNPs were synthesized through a simple one-step approach and characterized by UV-Visible (UV-Vis) spectroscopy, powder X-ray diffraction (PXRD), transmission electronic microscopy (TEM), and energy dispersive X-rays spectroscopy (EDS). PXRD and TEM results of AgNPs showed the face central cubic structures and predominantly spherical structures with a size of 6.5 nm. EDS analysis confirms the elemental silver in nanoparticles. Moreover, the impact of the pH, as well as temperature, during the synthesis of AgNPs has also been investigated. At 25°C and pH 5, there was no significant peak for AgNPs in the absorption spectra. However, with an increase in temperature from 25°C to 85°C and pH 5 to pH 11, particles started attaining the spherical shape of different sizes due to an increase in the reduction rate. The AgNPs displayed effective results against selected pathogenic strains, Pseudomonas aeruginosa (MTCC 424), Methicillin-resistant Staphylococcus aureus (ATCC 43300), and fungus Candida albicans (KACC 30003). The prepared AgNPs exhibited excellent antioxidant activity and catalytic reduction of methyl orange with the pseudo-first-order rate constant of 3.9 × 10−3.

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Section: Discussionsupporting

confidence: 86%

Characterizations and analysis of the antioxidant, antimicrobial, and dye reduction ability of green synthesized silver nanoparticles

Riaz

Ismail

Ahmad

et al. 2020

Green Processing and Synthesis

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“…3). This peak falls within the range of specification for nanoparticles as reported by some authors (Sigamoney et al, 2016;Fafal et al, 2017) FT-IR spectroscopy study FTIR spectroscopy measurements was employed to recognize and identify the biological reducing functional group which will give a hint about the likely group of organic compounds present in these wild and non-cultivated vegetables responsible for the reduction of the Ag + ions to elemental Ag 0 and the ensuing capping resulting into efficient stabilization of the AgNPs formed (Kumar et al, 2014). The FTIR spectra of the synthesized AgNPs of the four vegetables i.e.…”

Section: Uv-visible Spectroscopy Studysupporting

confidence: 85%

Phytobiological Facilitated Production of Silver Nanoparticles from Selected Non-Cultivated Vegetables in Nigeria and Their Biological Potential

Micheal¹,

O.²,

A.³

et al. 2019

tjps

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Plant-mediated synthesis (Silver (Ag) to form nanoparticles) is progressively becoming well accepted in many scientific and pharmaceutical fields. This study is aimed at synthesizing Ag nanoparticles using air-dried leaves of four (4) neglected vegetables i.e. Cerathoteca sesamoides, Ceiba pentandra, Crassocephalum crepidioides, Launaea taraxacifolia. Ultravioletvisible spectroscopy, Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) were used for characterization. Cell Stabilization Membrane (CSM) and lipoxidase assays, DPPH and ABTS+ assays were used to assess the anti-inflammatory and antioxidant activities of these AgNPs. L. taraxacifolia Ag nanoparticles (LT-AgNPs), C. sesamoides Ag nanoparticles (CS-AgNPs), C. pendandra Ag nanoparticles (CP-AgNPs) and C. crepidioides Ag nanoparticles (CC-AgNPs), were noticed through visual color change. The UV-Vis spectra of the synthesized nanoparticles displayed absorption bands at around 360-440 nm, which is a characteristic band for Ag nanoparticles. The SEM image of the AgNPs formed displayed were spherical in morphology. CC-AgNPs exhibited the most significant inhibitory activity against HRBC (IC50: 32.2) while CS-AgNPs displayed the most significant inhibitory activity against lipoxygenases (IC50: 32.8). CP-AgNPs exhibited the most significant antioxidant effect against both ABTS and DPPH (IC50: 5.5 and 6.4) when compared to ascorbic acid (IC50: 4.7 µg/mL).

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“…For the synthesis of AgNPs-E, the extract aliquot (2 cm 3 ) was mixed with 200 cm 3 of AgNO 3 solution (0.001 M) to the final concentration of the extract TEM in the mixture of 0.168 mg cm -3 . All solutions were prepared with twice re-distilled water.…”

Section: Synthesis Of Agnps-ementioning

confidence: 99%

“…have been developed for biomedical applications [2]. Silver is one of the most commercialized nanomaterials with the production of 500 t of silver nanoparticles (AgNPs) per year [3].…”

Section: Introductionmentioning

confidence: 99%

Aqueous extract of strawberry (Fragaria x ananassa Duch.) leaves as a stabilizing agent in the synthesis of bio-active silver nanoparticles

Stevanovic

Stanojevic

Danilović

et al. 2020

Hem Ind

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The aim of the presented work was to investigate the potential of aqueous extract of cultivated strawberry (Fragaria x ananassa Duch.) leaves for stabilization of silver nanoparticles (AgNPs-E) synthesized at room (RT) and boiling temperature (BT). The synthesis and stability of AgNPs-E were monitored by UV-Vis spectroscopy confirming high stability of the AgNPs-E in the dark at room temperature. The Fourier-transform infrared spectra suggest that molecules containing oxygen and nitrogen functional groups (NH, (NH)C=O, CNO, C-O-C and OH) participate in the reduction and stabilization of formed nanoparticles. As determined by the DPPH test, AgNPs-E synthesized at RT exerted higher antioxidant activity as compared to AgNPs-E synthesized at BT (EC50 values of 0.025 and 0.039 mg cm-3, respectively). Also, the AgNPs-E synthesized at RT exerted higher antibacterial activity against Escherichia coli, Staphylococcus aureus, Listeria monocytogenes, Bacillus subtilis and Bacillus luteus. Examination of the AgNPs-E on HeLa and MDCK cell lines showed concentration-dependent and cell line specific effects on the cell viability as evaluated by the MTT test. The obtained results indicate that synthesized AgNPs-E can be used as a base material in production of pharmaceutical preparations for potential skin applications.

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Synthesis, characterization and studies on antioxidant activity of silver nanoparticles using Asphodelus aestivus Brot. aerial part extract

Cited by 68 publications

References 31 publications

Characterizations and analysis of the antioxidant, antimicrobial, and dye reduction ability of green synthesized silver nanoparticles

Characterizations and analysis of the antioxidant, antimicrobial, and dye reduction ability of green synthesized silver nanoparticles

Phytobiological Facilitated Production of Silver Nanoparticles from Selected Non-Cultivated Vegetables in Nigeria and Their Biological Potential

Aqueous extract of strawberry (Fragaria x ananassa Duch.) leaves as a stabilizing agent in the synthesis of bio-active silver nanoparticles

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