Eco-friendly synthesis of Solanum trilobatum extract-capped silver nanoparticles is compatible with good antimicrobial activities

Ramanathan, Santheraleka; Anbu, Periasamy; Lakshmipriya, Thangavel; Kasim, Farizul Hafiz; Lee, Choul‐Gyun

doi:10.1016/j.molstruc.2018.01.056

Cited by 82 publications

(45 citation statements)

References 26 publications

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“…Using forceps, sterile filter paper discs were transferred onto the surface of the agar plate carefully. The filter paper discs were labeled properly, and each filter paper disc was loaded with different amounts of solutions (20,25,30,35,40, and 45 µL) from the dilutions made. Then, the agar plates were placed in the incubator set at 37°C overnight and monitored on the next day.…”

Section: Disc Diffusion Methods and Determination Of Minimum Inhibitormentioning

confidence: 99%

“…However, this finding was not consistent with the antimicrobial activity of GNP and herbal extract conjugates as stated in other studies although applications of gold (Au) are claimed to be better. It is widely accepted that metal nanoparticles are harmful to fungi and bacteria [40], and this characteristic allows them to adhere with cell wall of microorganisms, resulting in the destruction and death of the cell. In this study, different concentrations (20,25,30,35,40, and 45 µg) of herbal extracts were tested.…”

Section: Antimicrobial Activity Of Herbal Extract and Gnp Conjugatementioning

confidence: 99%

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Antimicrobial Potential of Andrographis paniculata Conjugated Gold Nanoparticle

Razalli¹,

Gopinath²,

Kasim³

et al. 2019

INNOCS Theranos Pharmco Sci

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Background: Herbal extracts have been traditionally used as antibacterial agents, and different strategies have been proposed to enhance their antimicrobial activities. This research aimed to assess the antimicrobial potential of Andrographis paniculata conjugated gold nanoparticle (GNP) compounds against Escherichia coli and Bacillus subtilis.Methods: Herbal extract was conjugated with GNP through electrostatic interaction, and characterization was carried out by Fourier-transmission infrared spectroscopy, screening electron microscopy, and transmission electron microscopy and supported by energy-dispersive X-ray spectroscopy. Antibacterial activity of the herbal extract and GNP conjugation was evaluated by disc diffusion assay.Results: Chemical and morphological characterizations of the GNP and herbal extract conjugate revealed intactness of the GNP. In disc diffusion assay, the inhibition zone formed by these compounds was measured for both microorganisms, and they were in the range of 0.6-0.9 cm for the herbal extract. When the herbal extract conjugated with GNP, the zone was between 0.8 and 1.1 cm.Conclusion: This study demonstrated the potentiality of GNP to carry the antibacterial compounds from the herbal extract.

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Section: Disc Diffusion Methods and Determination Of Minimum Inhibitormentioning

confidence: 99%

Section: Antimicrobial Activity Of Herbal Extract and Gnp Conjugatementioning

confidence: 99%

Antimicrobial Potential of Andrographis paniculata Conjugated Gold Nanoparticle

Razalli¹,

Gopinath²,

Kasim³

et al. 2019

INNOCS Theranos Pharmco Sci

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“…PDI ranges from a value of 0.01 to 0.7 for monodispersed particles. Samples with very broad size distribution have PDI greater than 0.7 [30,31]. The PDI of the biosynthesized AgNPs was found to be 0.269 indicating the biosynthesized nanoparticles are monodispersed with greater stability.…”

Section: Dynamic Light Scattering (Dls) and Zeta Potential Analysismentioning

confidence: 98%

Synthesis and Characterization of Bioinspired Silver Nanoparticles by Aqueous Leaf Extract of Indigofera cassioides: Evaluation of Antimicrobial and Cytotoxic Activity

Kumar¹,

Kumar²,

Lathiff³

et al. 2019

JNST

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The green synthesis of silver nanoparticles (AgNPs) has increasingly promising due to their potential applications in nanomedicine. For the first time, silver nanoparticles (AgNPs) were synthesized from aqueous leaf extract of Indigofera cassioides. The AgNPs were characterized by UV-Vis spectroscopy and the characteristic surface plasmon resonance peak was observed at 414 nm. The Fourier transform infrared spectroscopy (FT-IR) revealed the phytochemicals in the plant extract which assisted bioreduction, capping and stabilizing agent. Morphology of AgNPs was characterized by transmission electron microscopy (TEM) and they were spherical shape with average particle size as 20 nm. The face centered cubic (FCC) crystalline structure of the AGNPs was confirmed by X-ray diffraction. Dynamic light scattering (DLS) and zeta potential analysis revealed that the average hydrodynamic diameter of the AGNPs as 80 nm and the negative zeta potential value of-36.6 mV indicates good stability. Antimicrobial studies disclosed that the biosynthesized AgNPs possess strong activity against pathogenic bacteria. The cytotoxicity study is concealed that the AgNPs exhibit selective cytotoxicity against the tested cell lines and a pronounced activity was observed against human breast cancer cells (MCF-7). The present study concludes that for the biosynthesized AgNPs could be used as an antimicrobial and anticancer agent.

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“…A disc diffusion assay was applied to examine the bacterial inhibiting property. The assay was performed as discussed in our earlier research 20 . Approximately 100 µL of bacterial inoculum were thoroughly spread on a nutrient agar plate using a glass spreader.…”

Section: Analysis Of the Bacterial Inhibition Potential Of Aluminosilmentioning

confidence: 99%

Aluminosilicate Nanocomposites from Incinerated Chinese Holy Joss Fly Ash: A Potential Nanocarrier for Drug Cargos

Ramanathan

Gopinath

Arshad

et al. 2020

Sci Rep

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An incredible amount of joss fly ash is produced from the burning of Chinese holy joss paper; thus, an excellent method of recycling joss fly ash waste to extract aluminosilicate nanocomposites is explored. The present research aims to introduce a novel method to recycle joss fly ash through a simple and straightforward experimental procedure involving acidic and alkaline treatments. The synthesized aluminosilicate nanocomposite was characterized to justify its structural and physiochemical characteristics. A morphological analysis was performed with field-emission transmission electron microscopy, and scanning electron microscopy revealed the size of the aluminosilicate nanocomposite to be ~25 nm, while also confirming a uniformly spherical-shaped nanostructure. The elemental composition was measured by energy dispersive spectroscopy and revealed the Si to Al ratio to be 13.24 to 7.96, showing the high purity of the extracted nanocomposite. The roughness and particle distribution were analyzed using atomic force microscopy and a zeta analysis. X-ray diffraction patterns showed a synthesis of faceted and cubic aluminosilicate crystals in the nanocomposites. The presence of silica and aluminum was further proven by X-ray photoelectron spectroscopy, and the functional groups were recognized through Fourier transform infrared spectroscopy. The thermal capacity of the nanocomposite was examined by a thermogravimetric analysis. In addition, the research suggested the promising application of aluminosilicate nanocomposites as drug carriers. The above was justified by an enzyme-linked apta-sorbent assay, which claimed that the limit of the aptasensing aluminosilicateconjugated ampicillin was twofold higher than that in the absence of the nanocomposite. The drug delivery property was further justified through an antibacterial analysis against Escherichia coli (gramnegative) and Bacillus subtilis (gram-positive). An increasing amount of fly ash is being produced at an alarming rate throughout the world, and it is not a simple subject to be neglected. More than 90 million tons of fly ash are being produced annually in India, China and the USA and ~50,000 acres of land are used for ash ponds 1. Apart from coal combustion in thermal power plants, joss paper fly ash also shows a significant contribution toward tremendous fly ash accumulation. Joss paper has been used since the time of the six dynasties, and it is widely burned by the Chinese population during their festivals and funerals as a notable tradition. An estimated 90,000 to 220,000 tons of joss paper is burned each year. Although the exact figure has not been identified, it is one of the main causes of air pollution, predominantly in China and Taiwan. Efforts toward the invention of ecofriendly burning furnaces with high-efficiency incinerators, to reduce the release of heavy metals from fly ash, are not disregarded but have never met the expected objective 2,3. Several efforts have been shown for the disposal or recycling of joss fly ash. The consumption of fly ash...

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Eco-friendly synthesis of Solanum trilobatum extract-capped silver nanoparticles is compatible with good antimicrobial activities

Cited by 82 publications

References 26 publications

Antimicrobial Potential of Andrographis paniculata Conjugated Gold Nanoparticle

Antimicrobial Potential of Andrographis paniculata Conjugated Gold Nanoparticle

Synthesis and Characterization of Bioinspired Silver Nanoparticles by Aqueous Leaf Extract of Indigofera cassioides: Evaluation of Antimicrobial and Cytotoxic Activity

Aluminosilicate Nanocomposites from Incinerated Chinese Holy Joss Fly Ash: A Potential Nanocarrier for Drug Cargos

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