Antibacterial potential of silver nanoparticles synthesised by electron beam irradiation

Pattabi, Rani M.; Sridhar, Kandikere R.; Gopakumar, S.; Bhat, Vinayachandra; Pattabi, Manjunatha

doi:10.1504/ijnp.2010.033221

Cited by 14 publications

(9 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum zone of inhibition of agar-silver nanoparticle film (15 mm) was found against E. coli whereas the minimum zone of inhibition (14 mm) was recorded against S. aureus. Pattabi et al [ 31] also reported maximum activity of silver nanoparticles against gram-negative bacteria compared to gram-positive bacteria which is due to the presence of peptidoglycan layer that serves as a protective covering for gram-positive bacteria. For the weight loss study, uncoated fruits (lime and apple), fruits coated with agar film (lime and apple) and those with A-AgNP film (lime and apple) were kept at room temperature and the weight loss of fruits was measured at a three-day interval (Fig.…”

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Preparation of an agar‐silver nanoparticles (A‐AgNp) film for increasing the shelf‐life of fruits

Gudadhe

Yadav

Gade

et al. 2014

IET nanobiotechnol.

View full text Add to dashboard Cite

Preparation of protective coating possessing antimicrobial properties is present day need as they increase the shelf life of fruits and vegetables. In the present study, preparation of agar-silver nanoparticle film for increasing the shelf life of fruits is reported. Silver nanoparticles (Ag-NPs) biosynthesised using an extract of Ocimum sanctum leaves, were mixed with agar-agar to prepare an agar-silver nanoparticles (A-AgNp) film. This film was surface-coated over the fruits, Citrus aurantifolium (Thornless lime) and Pyrus malus (Apple), and evaluated for the determination of antimicrobial activity of A-AgNp films using disc diffusion method, weight loss and shelf life of fruits. This study demonstrates that these A-AgNp films possess antimicrobial activity and also increase the shelf life of fruits.

show abstract

Section: Resultsmentioning

confidence: 98%

“…Pattabi et al . [31] also reported maximum activity of silver nanoparticles against gram‐negative bacteria compared to gram‐positive bacteria which is due to the presence of peptidoglycan layer that serves as a protective covering for gram‐positive bacteria.…”

Section: Resultsmentioning

confidence: 99%

Preparation of an agar‐silver nanoparticles (A‐AgNp) film for increasing the shelf‐life of fruits

Gudadhe

Yadav

Gade

et al. 2014

IET nanobiotechnol.

View full text Add to dashboard Cite

show abstract

“…In particular, electron beam irradiation allows the preparation of noble and transition metal nanoparticles . Pattabi et al have synthesized silver nanoparticles with enhanced antibacterial activity by using electron beam irradiation. During imaging, the electron beam interacts with the sample causing a novel phenomenon that occurs only in the beam's presence.…”

Section: Introductionmentioning

confidence: 99%

A Combined Experimental and Theoretical Study on the Formation of Ag Filaments on β‐Ag₂MoO₄Induced by Electron Irradiation

Andrés

Ferrer

Gracia

et al. 2015

Part & Part Syst Charact

View full text Add to dashboard Cite

A combined experimental and theoretical study is presented to understand the novel observed nucleation and early evolution of Ag filaments on Ag 2 MoO 4 crystals, driven by an accelerated electron beam from an electronic microscope under high vacuum. The growth process, chemical composition and the element distribution in these filaments were analyzed in depth at the nanoscale level using field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) with energy dispersive spectroscopy (EDS) characterization. To complement experimental results, chemical stability, structural and electronic aspects have been studied systematically using first-principles electronic structure theory within a QTAIM framework. The Ag nucleation and formation on -Ag 2 MoO 4 is a result of structural and electronic changes of the AgO 4 tetrahedral cluster as a constituent building block of -Ag 2 MoO 4 , consistent with Ag metallic formation. The formation of Ag filament transforms the -Ag 2 MoO 4 semiconductor from n to p type concomitant with the appearance of Ag defects.

show abstract

“…Elemental Ag and Ni have long been known for their antibacterial properties. Complexes of Ni(II) have shown a distinct antibacterial behaviour against Staphylococcus aureus (Mondelli et al 2008) and Escherichia coli (Ghosh et al 1987) similar to Ag compounds (Sondi and Salopek-Sondi 2004;Morones et al 2005), which additionally display antibacterial properties towards Pseudomonas aeruginosa and Streptococcus pneumonia (Pattabi et al 2010). Ag-Ni ANPs are expected to demonstrate antibacterial effects against these germs due to their synergistic effects.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of monodisperse thermally immiscible Ag-Ni alloy nanoparticles at room temperature

Tabatabaei

Sadrnezhaad

2014

Bull Mater Sci

View full text Add to dashboard Cite

Ag and Ni are immiscible, mainly due to their large lattice mismatch. This paper reports on their nanoscale formation of solid solution at room temperature by simple reduction reactions which lead to the amorphous Ag-Ni alloy nanoparticles (ANPs) with mono-disperse distribution. Microscopic and spectroscopic studies confirmed dependence of the alloy composition on size of nanoparticles. In the presence of different ligands such as sodium citrate, polyvinyl alcohol and potassium carbonate a mixture of silver oxide and Ag-Ni ANPs was achieved. Stoichiometry of the Ag-Ni ANPs was also found to be strongly dependent on ligands of the reduction reaction and further study shows without any ligand 100% Ag-Ni ANPs was observed in the system. Using Tetrakis hydroxymethyl phosphonium chloride resulted in construction of near-uniform ANPs in the easily controllable conditions of the present alloying procedure. Nanoparticles having up to 65% Ni were observed for the first time in this research.

show abstract

Antibacterial potential of silver nanoparticles synthesised by electron beam irradiation

Cited by 14 publications

References 34 publications

Preparation of an agar‐silver nanoparticles (A‐AgNp) film for increasing the shelf‐life of fruits

Preparation of an agar‐silver nanoparticles (A‐AgNp) film for increasing the shelf‐life of fruits

A Combined Experimental and Theoretical Study on the Formation of Ag Filaments on β‐Ag₂MoO₄Induced by Electron Irradiation

Facile synthesis of monodisperse thermally immiscible Ag-Ni alloy nanoparticles at room temperature

Contact Info

Product

Resources

About

Antibacterial potential of silver nanoparticles synthesised by electron beam irradiation

Cited by 14 publications

References 34 publications

Preparation of an agar‐silver nanoparticles (A‐AgNp) film for increasing the shelf‐life of fruits

Preparation of an agar‐silver nanoparticles (A‐AgNp) film for increasing the shelf‐life of fruits

A Combined Experimental and Theoretical Study on the Formation of Ag Filaments on β‐Ag2MoO4Induced by Electron Irradiation

Facile synthesis of monodisperse thermally immiscible Ag-Ni alloy nanoparticles at room temperature

Contact Info

Product

Resources

About

A Combined Experimental and Theoretical Study on the Formation of Ag Filaments on β‐Ag₂MoO₄Induced by Electron Irradiation