Green synthesis of silver nano particles from Atalantia monophylla (L) Correa leaf extract, their antimicrobial activity and sensing capability of H 2 O 2

Mahadevan, S.; Vijayakumar, Sekar; Arulmozhi, P.

doi:10.1016/j.micpath.2017.11.029

Cited by 49 publications

(19 citation statements)

References 18 publications

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“…By developing nanotechnology, several nanostructures have been introduced as antifungal agents [9][10][11]. Among these nanomaterials, silver (Ag) nanoparticles (NPs) have been studied extensively more than others as antibacterial and antifungal agents [12][13][14][15][16][17]. Although there are a variety of chemical methods [18][19][20][21] in the preparation of Ag NPs, the 'green synthesis' has attracted a lot of interest due to avoiding hazardous waste, synthesising high purified product, economic benefits, and low-energy consumption [22].…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using Zingiber officinale and Thymus vulgaris extracts: characterisation, cell cytotoxicity, and its antifungal activity against Candida albicans in comparison to fluconazole

Mohammadi

Shahisaraee

Tavajjohi

et al. 2019

IET nanobiotechnol.

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Fluconazole (FLZ) application as a highly successful commercial antifungal azole agent to treat the fungal infections is limited due to emergence of FLZ-resistant candida. In this study, the potential of green synthesised silver nanoparticles (NPs) as an antifungal agent against Candida albicans fungal pathogen is investigated. The extract of ginger (Zingiber officinale) and thyme (Thymus vulgaris) plays as reducing agent, capping agent and antifungal agent. The UV-visible spectroscopy shows the peak of surface plasmon resonance of synthesised Ag NPs after a period of time. The synthesised Ag NPs are spherical, with average sizes of 12 and 18 nm based on ginger and thyme extract, respectively. Fourier transform infrared spectroscopy confirms the adsorption of the plant extract on the surface of the as-prepared Ag NPs. Based on the minimum inhibitory concentration (MIC) method against Candida albicans, the antifungal activity of as-prepared green synthesised Ag NPs shows higher inhibitory in comparison to FLZ. Finally, the Ag NPs synthesised via thyme extract shows no cytotoxicity with concentration below 3.5 ppm, which can be considered as an appropriate candidate instead of FLZ to treat the superficial fungal infections.

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Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using Zingiber officinale and Thymus vulgaris extracts: characterisation, cell cytotoxicity, and its antifungal activity against Candida albicans in comparison to fluconazole

Mohammadi

Shahisaraee

Tavajjohi

et al. 2019

IET nanobiotechnol.

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“…UV Visible spectroscopy is one of the most important techniques which can confirm that the prepared material are nanoparticles [40]. Figure 10 shows the plot of absorption spectrum obtained from the UV-Vis spectroscopic analysis of the AgNPs over a range of 200 to 800 nm.…”

Section: Resultsmentioning

confidence: 99%

Nanomaterial-Enhanced Receptor Technology for Silicon On-Chip Biosensing Application

Okhai¹,

Idris²,

Feleni³

et al. 2021

Biosensors - Current and Novel Strategies for Biosensing

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Nanomaterials integration in biosensors designs are known to enhance sensing and signaling capabilities by exhibiting remarkably high surface area enhancement and intrinsic reactivity owing to their distinctive optical, chemical, electrical and catalytic properties. We present the synthesis and characterization of silver nanoparticles (AgNPs), and their immobilization on a silicon on-chip biosensor platform to enhance sensing capability for prostate specific antigen (PSA) - cancer biomarkers. Several techniques, including UV-Visible (UV-Vis) absorption spectrum, Fourier transforms infrared spectroscopy (FTIR), high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM) and field emission scanning electron microscopy (FESEM) were used for characterizing the AgNPs. The biochemical sensor consists of AgNPs immobilized on the receptor layer of a silicon avalanche mode light emitting device (Si AM LED) which enables on-chip optical detection biological analytes. A bio-interaction layer etched from the chip interacts with the evanescent field of a micro dimensioned waveguide. An array of detectors below the receptor cavity selectively monitor reflected light in the UV, visible, infrared and far infrared wavelength regions. AgNPs used as an immobilization layer in the receptor layer enhances selective absorption analytes, causing a change in detection signal as a function of propagation wavelength as light is dispersed. The analytes could range from gases to cancer biomarkers like prostate specific antigen.

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“…where D is the size of crystal, λ is the wavelength of X‐ray used, β the width at half maximum (FWHM), and θ is the Bragg's angle (Mahdevan, Vijaykumar, & Arulmozhi, ). The mean particle size of AgNPs determined by Debye–Scherrer's equation (instrumental broadening was) was 16.04 nm.…”

Section: Resultsmentioning

confidence: 99%

Casein and Ag nanoparticles: Synthesis, characterization, and their application in biopolymer‐based bilayer film

Bora

Mishra

2019

J Food Process Preserv

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In the present investigation, casein nanoparticles and silver nanoparticles (AgNPs) were synthesized separately and the synthesized nanoparticles were incorporated into the bilayer film. Casein nanoparticles were produced using desolvation techniques, whereas AgNPs were synthesized using casein protein. The synthesized nanoparticles were characterized by scanning electron microscope (SEM), field emission electron microscope (FESEM), and UV–Visible spectra. UV spectra and SEM revealed that the pH had a significant effect on the size of both casein nanoparticles and AgNPs. AgNPs, synthesized at pH 13, were spherical in shape with average particle size of 10–25 nm and were stable up to 80 days. All the synthesized AgNPs showed 7–14 mm of zone of inhibition against growth of Escherichia coli. Incorporation of AgNPs and casein nanoparticles into sodium alginate/casein bilayer film improved the oxidative stability of packed almond oil during storage. Peroxide value of oil was increased from 8.02 meq/kg to 11.5 meq/kg only when stored in nanoparticles containing biopolymer film. Practical applications Edible film is a better alternative of plastic materials, but poor shelf life and mechanical properties of the film restrict the application of edible films in food Industries. Incorporation of antibacterial agent can improve the shelf life of biodegradable film. So, in present investigation, casein nanoparticles and AgNPs were synthesized separately. Casein nanoparticles were produced using desolvation techniques, whereas AgNPs were synthesized through mediation of casein protein. Synthesized nanoparticles were characterized by SEM, FESEM, and UV–Visible spectra. The synthesized nanoparticles were incorporated into pectin–sodium alginate/casein bilayer film. Incorporation of AgNPs and casein nanoparticles in bilayer improved the oxidative stability of almond oil during storage.

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Green synthesis of silver nano particles from Atalantia monophylla (L) Correa leaf extract, their antimicrobial activity and sensing capability of H 2 O 2

Cited by 49 publications

References 18 publications

Green synthesis of silver nanoparticles using Zingiber officinale and Thymus vulgaris extracts: characterisation, cell cytotoxicity, and its antifungal activity against Candida albicans in comparison to fluconazole

Green synthesis of silver nanoparticles using Zingiber officinale and Thymus vulgaris extracts: characterisation, cell cytotoxicity, and its antifungal activity against Candida albicans in comparison to fluconazole

Nanomaterial-Enhanced Receptor Technology for Silicon On-Chip Biosensing Application

Casein and Ag nanoparticles: Synthesis, characterization, and their application in biopolymer‐based bilayer film

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