Green synthesis characterization and antimicrobial activity against<i>Staphylococcus aureus</i>of silver nanoparticles using extracts of neem, onion and tomato

Chand, Kishore; Abro, M. Ishaque; Aftab, Umair; Shah, Ahmer Hussain; Lakhan, Muhammad Nazim; Cao, Dianxue; Mehdi, Ghazanfar; Mohamed, Abdalla Mohamed Ali

doi:10.1039/c9ra01407a

Cited by 69 publications

(22 citation statements)

References 62 publications

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“…The bands observed at 2921, 1380 and 1030 cm −1 were attributed to C-H stretching vibration, C-O stretching vibration and C-O bending frequencies, respectively. All these bands confirmed that the main plant metabolites from the fruit extract involved in the synthesis of AgNPs are polyphenols, phenolic acids and flavonoids, results in agreement with previous studies [12,37]. The X-ray diffraction analysis (XRD) was used to investigate the crystallinity of the nanoparticles.…”

Section: Synthesis and Characterization Of Silver Nanoparticlessupporting

confidence: 89%

Green Synthesis of Biogenic Silver Nanoparticles for Efficient Catalytic Removal of Harmful Organic Dyes

2020

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The present article reports an environmentally benign method for synthesizing silver nanoparticles using the fruit extract of Viburnum opulus L. as a source of bioactive compounds, which can act as reducing agents of the silver ions and also as stabilizing agents of the obtained nanoparticles. The catalytic ability of the synthesized silver nanoparticles (AgNPs) to remove toxic organic dyes was also evaluated. The biosynthesis of silver nanoparticles was firstly confirmed by UV-Vis spectral analysis, which revealed the presence of the characteristic absorption peak at 415 nm corresponding to the surface plasmon vibration of colloidal silver. Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) studies were conducted to confirm the presence of bioactive phytocompounds, especially phenolics, as capping and stabilizing agents of the AgNPs. The size, morphology and crystalline nature of the synthesized AgNPs were investigated by transmission electron microscopy and X-ray diffraction techniques revealing that the obtained nanoparticles were spherical shaped, with an average diameter of 16 nm, monodispersed, face centered cubic nanoparticles. Further, the catalytic ability in the degradation of tartrazine, carmoisine and brilliant blue FCF dyes by NaBH4 was evaluated. The results demonstrated an efficient activity against all the investigated dyes being an outstanding catalyst for the degradation of brilliant blue FCF. This eco-friendly synthetic approach can generate new tools useful in environmental pollution control.

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Section: Synthesis and Characterization Of Silver Nanoparticlessupporting

confidence: 89%

Green Synthesis of Biogenic Silver Nanoparticles for Efficient Catalytic Removal of Harmful Organic Dyes

2020

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“…Silver nanoparticles' antibacterial activity is the most promising in the drug delivery field, where they are the most interesting materials in clinical research due to their increasing microbial resistance to metal ions, antibiotics, and the development of resistance of various strains [34]. Owing to their large surface area, silver nanoparticles (AgNPs) are very significant compared to their volume.…”

Section: Introductionmentioning

confidence: 99%

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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“…The higher sizes detected are the consequence of aggregation of smaller nanoparticles, which lead to a high value of PDI. Most literature indicate a similar particle size of AgNPs ranging from 10-800nm as described in neem, onion and tomato extracts with a PDI between 0.2-1.0 [27]. Similar results were obtained using a Berberis leaf extract where the silver nanoparticles showed a size between 90-100 nm, and a PDI of 0.3, the authors of the study point out that although these nanoparticles had a high DL values, aggregation of small nanoparticles were detected by TEM analysis [28].…”

Section: Dls Measures Of Biogenic-agnpsmentioning

confidence: 85%

Biogenic Silver Nanoparticles from Iris Tuberosa as Potential Preservative In Cosmetic Products

Mondéjar-López

López-Jiménez

Abad-Jordá³

et al. 2021

Preprint

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Biogenic-Silver nanoparticles emerge as new nanosilver platfmorm that allow to obtain silver nanoparticles via “green chemistry”. In our study we obtained biogenic-Silver nanoparticles from Iris tuberosa leaves extract. Nanoparticles were characterized by UV-vis spectroscopy, dinnamical light scattering technique and Transmission electron microscope, showing spheric and irregular nanoparticles with 5 to 50 nm in diameter. Antioxidant and antimicrobial properties were evaluated against typical microbial contaminants found in cosmetic products, showing high antioxidant and antimicrobial properties. We formulated a natural moisturizing cream with biogenic-silver nanoparticles to evaluate the preservative efficiency trought challenge test, confirming that our nanoparticles are a promising alternative to use as cosmetic preservative.

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Green synthesis characterization and antimicrobial activity againstStaphylococcus aureusof silver nanoparticles using extracts of neem, onion and tomato

Abstract: The silver nanoparticles were synthesized from the neem leaves, onions, and tomato extracts, and the antibacterial activity of the particles was studied.

Cited by 69 publications

References 62 publications

Green Synthesis of Biogenic Silver Nanoparticles for Efficient Catalytic Removal of Harmful Organic Dyes

Green Synthesis of Biogenic Silver Nanoparticles for Efficient Catalytic Removal of Harmful Organic Dyes

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

Biogenic Silver Nanoparticles from Iris Tuberosa as Potential Preservative In Cosmetic Products

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