Biosynthesis of Silver Nanoparticles Using Selaginella bryopteris Plant Extracts and Studies of Their Antimicrobial and Photocatalytic Activities

Biswas, Aayushi; Chawngthu, Lalrampani; Vanlalveni, Chhangte; Hnamte, Remruattluanga; Lalfakzuala, R.; Rokhum, Samuel Lalthazuala

doi:10.1166/jbns.2018.1510

“…8 and 9. The antibacterial activities of AgNPs may be due to the blockage of enzyme pathways and/or microcidal alteration of the bacterial membranes, the results are in accordance with our previous work [25][26][27][28]. It is well known that Ag + ions can rupture cell walls of a microbe, denature cellular proteins, block cell respiration and eventually resulted in cell death; however, it is believed that AgNPs toxicity cannot be solely attributed to release of Ag + ions, and bacterial contact with nanoAg particles has been proposed to be a key factor for AgNPs toxicity.…”

Section: Transmissionsupporting

confidence: 91%

“…Green synthesised AgNPs play a very active role in the medicinal field and has been used successfully as various tropical ointments as healing burns and surface wounds [24]. In continuation to our recent endeavour in the green synthesis of AgNPs for their potential applications as antimicrobial agents [25][26][27][28], herein we report the novel synthesis of AgNPs from leaf extracts of Mikania micrantha and investigate its activities against several human pathogenic bacteria.…”

mentioning

confidence: 99%

Biosynthesis, characterisation and antibacterial activity of Mikania micrantha leaf extract‐mediated AgNPs

Biswas

¹

,

Vanlalveni

²

,

Adhikari³

et al. 2019

Micro & Nano Letters

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In the present years, nanobiotechnology has to turn out to be an important division of research. Here, this work reported a novel Mikania micrantha leaf extract-mediated silver nanoparticle (AgNP) under room temperature condition. The biosynthesised AgNPs were further characterised by various analysis techniques such as ultraviolet-visible spectrophotometer, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and transmission electron microscope (TEM) energy-dispersive X-ray spectroscopy. The formation of AgNPs was confirmed by XRD spectrum which displayed intense peaks corresponding to the (1 1 1), (2 0 0), (2 2 0) and (3 1 1) lattice planes of Ag. The plant extracts stirred with Ag nitrate solution gradually changes its colour from light yellow to dark brown. The biogenic AgNPs were mostly spherical in shape with varying sizes ranging from 5 to 20 nm, as evident by TEM analysis. FT-IR spectra of the extract revealed the presence of amide I and amide II bonds of the proteins. The synthesised AgNPs showed excellent activity results against various Gram-positive and Gram-negative bacterial strains.

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“…3.6 Antimicrobial activity Antimicrobial activity was performed by agar well diffusion method, with slight modifications. Freshly prepared molten Muller Hinton Agar (MHA) media for bacterial culture and Potato Dextrose Agar (PDA) media for fungal culture were poured to uniform depth of 5 mm and allowed to cool at room temperature [49], [43], [50]. After solidification, wells were made in MHA media by 6 mm sterilized cork borer.…”

Section: Figure 5 (I) Sem (Ii) Eds Pattern Of Mikania Mikrantha Fe3o4mentioning

confidence: 99%

Mikania Mikrantha Leaf Extract Mediated Biogenic Synthesis of Magnetic Iron Oxide Nanoparticles: Characterization and Its Antimicrobial Activity Study

Biswas¹,

Vanlalveni²,

Lalfakzuala³

et al. 2020

Preprint

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With an aim to introduce a new highly potent antimicrobial nanoparticles using an environment-friendly route, he present work reports the green synthesis of iron oxide nanoparticles (Fe3O4NPs) utilizing Mikania mikrantha leaf extract and its application as efficient antimicrobial agent. The green Fe3O4NPs have been described by X-beam diffraction (XRD), Ultraviolet-Visible (UV-Vis) spectroscopy, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Fourier Transform-Infra Red (FT-IR) investigation. The TEM image shows the rhomboidal Fe3O4NPs with average mean sizes 20.27 nm. The FT-IR investigation proved Fe3O4NPs have been balanced out through the associations of steroids, terpenoids, flavonoids, phenyl propanoids, phenolic acids and proteins present in the leaf extract. The synthesized Fe3O4NPs shows a very high antibacterial and antifungal property against 5 bacterial strains such as Bacillus cereus, Acinetobacter johnsonii, Pseudomonas aeruginosa, Achromobacter spanius and Chromobacterium pseudoviolaceum strain, and 4 fungal strains (Aspergillus niger, Penicillium citirinum, Fusarium oxysporium, and Candida albicans). The green synthesized iron oxide nanoparticles can interfere metabolic activities of microorganisms which determine its antimicrobial properties and could bring a promising application in the fields of medicine.

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“…FIGURE 6: VSM pattern of Mikania mikrantha mediated Fe3O4NPs 3.6 Antimicrobial activity Antimicrobial activity was performed by agar well diffusion method, with slight modifications. Freshly prepared molten Muller Hinton Agar (MHA) media for bacterial culture and Potato Dextrose Agar (PDA) media for fungal culture were poured to uniform depth of 5 mm and allowed to cool at room temperature [49], [43], [50]. After solidification, wells were made in MHA media by 6 mm sterilized cork borer.…”

Section: Figure 5 (I) Sem (Ii) Eds Pattern Of Mikania Mikrantha Fe3o4 Nanoparticles 35 Vsm Analysismentioning

confidence: 99%

Mikania Mikrantha Leaf Extract Mediated Biogenic Synthesis of Magnetic Iron Oxide Nanoparticles: Characterization and Its Antimicrobial Activity Study

Biswas¹,

Vanlalveni²,

Lalfakzuala³

et al. 2020

Preprint

Self Cite

1

0

View full text Add to dashboard Cite

With an aim to introduce a new highly potent antimicrobial nanoparticles using an environment-friendly route, he present work reports the green synthesis of iron oxide nanoparticles (Fe3O4NPs) utilizing Mikania mikrantha leaf extract and its application as efficient antimicrobial agent. The green Fe3O4NPs have been described by X-beam diffraction (XRD), Ultraviolet-Visible (UV-Vis) spectroscopy, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Fourier Transform-Infra Red (FT-IR) investigation. The TEM image shows the rhomboidal Fe3O4NPs with average mean sizes 20.27 nm. The FT-IR investigation proved Fe3O4NPs have been balanced out through the associations of steroids, terpenoids, flavonoids, phenyl propanoids, phenolic acids and proteins present in the leaf extract. The synthesized Fe3O4NPs shows a very high antibacterial and antifungal property against 5 bacterial strains such as Bacillus cereus, Acinetobacter johnsonii, Pseudomonas aeruginosa, Achromobacter spanius and Chromobacterium pseudoviolaceum strain, and 4 fungal strains (Aspergillus niger, Penicillium citirinum, Fusarium oxysporium, and Candida albicans). The green synthesized iron oxide nanoparticles can interfere metabolic activities of microorganisms which determine its antimicrobial properties and could bring a promising application in the fields of medicine.

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Biosynthesis of Silver Nanoparticles Using Selaginella bryopteris Plant Extracts and Studies of Their Antimicrobial and Photocatalytic Activities

Cited by 14 publications

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Biosynthesis, characterisation and antibacterial activity of Mikania micrantha leaf extract‐mediated AgNPs

Biosynthesis, characterisation and antibacterial activity of Mikania micrantha leaf extract‐mediated AgNPs

Mikania Mikrantha Leaf Extract Mediated Biogenic Synthesis of Magnetic Iron Oxide Nanoparticles: Characterization and Its Antimicrobial Activity Study

Mikania Mikrantha Leaf Extract Mediated Biogenic Synthesis of Magnetic Iron Oxide Nanoparticles: Characterization and Its Antimicrobial Activity Study

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