Bio-synthesis and antimicrobial activity of silver nanoparticles using anaerobically digested parthenium slurry

Adur, Alaknanda J; Nandini, N.; Mayachar, K. Shilpashree; Ramya, R.; Srinatha, N.

doi:10.1016/j.jphotobiol.2018.04.020

Cited by 45 publications

(19 citation statements)

References 19 publications

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“…The peaks at 2345.20 cm −1 and 2165.20 cm −1 correspond to the asymmetric C−H stretching vibration of aliphatic groups, and C=O stretching vibrations of carboxylic acids, respectively. These findings reveal the interaction of the functional amino groups with the surface of AgNPs, which might have acted as the capping area for the stability of the synthesized AgNPs [21,43,44,45,48]. The FTIR peaks also reveal the presence of phenols, proteins and carboxylic acids in the CFE, which might have acted as the reducing and stabilizing agents in the synthesis of AgNPs [30,34].…”

Section: Resultsmentioning

confidence: 99%

“…Formation of AgNPs in the reaction mixture exposed to sunlight produced a gradual color change (Figure 1) due to the excitation of strong surface plasmon vibration with the AgNPs in the visible region [43,44,45]. The synthesized AgNPs exhibited a clear surface plasmon resonance resulting in the formation of a sharp peak at 421 nm wavelength in the UV-visible spectra (Figure 2), which was specific for the synthesized spherical AgNPs [46,47].…”

Section: Resultsmentioning

confidence: 99%

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Silver Nanoparticles Synthesized by Using the Endophytic Bacterium Pantoea ananatis are Promising Antimicrobial Agents against Multidrug Resistant Bacteria

Rahman²,

et al. 2018

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Antibiotic resistance is one of the most important global problems currently confronting the world. Different biomedical applications of silver nanoparticles (AgNPs) have indicated them to be promising antimicrobial agents. In the present study, extracellular extract of an endophytic bacterium, Pantoea ananatis, was used for synthesis of AgNPs. The synthesized AgNPs were characterized by UV–Vis spectroscopy, FTIR, transmission electron microscopy (TEM), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), and Zeta potential. The antimicrobial potential of the AgNPs against pathogenic Staphylococcus aureus subsp. aureus (ATCC 11632), Bacillus cereus (ATCC 10876), Escherichia coli (ATCC 10536), Pseudomonas aeruginosa (ATCC 10145) and Candida albicans (ATCC 10231), and multidrug resistant (MDR) Streptococcus pneumoniae (ATCC 700677), Enterococcus faecium (ATCC 700221) Staphylococcus aureus (ATCC 33592) Escherichia coli (NCTC 13351) was investigated. The synthesized spherical-shaped AgNPs with a size range of 8.06 nm to 91.32 nm exhibited significant antimicrobial activity at 6 μg/disc concentration against Bacillus cereus (ATCC 10876) and Candida albicans (ATCC 10231) which were found to be resistant to conventional antibiotics. The synthesized AgNPs showed promising antibacterial efficiency at 10 µg/disc concentration against the MDR strains. The present study suggests that AgNPs synthesized by using the endophytic bacterium P. ananatis are promising antimicrobial agent.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Silver Nanoparticles Synthesized by Using the Endophytic Bacterium Pantoea ananatis are Promising Antimicrobial Agents against Multidrug Resistant Bacteria

Rahman²,

et al. 2018

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“…The effectiveness of nanosilver-based biomaterials as promising antimicrobial agents was experimentally assessed against a wide range of medically relevant planktonic and sessile pathogenic microorganisms, including bacteria [ 41 , 42 ], viruses [ 43 , 44 ], fungi, and yeasts [ 45 , 46 ]. The impressive antimicrobial activity of AgNPs is a solid starting point for the design, development, and implementation of new and performance-enhanced nanosilver-based biomedical products, such as anticancer agents, drug-delivery platforms, orthopedic materials and devices [ 47 ], bandages, antiseptic sprays, and catheters [ 48 ].…”

Section: Introductionmentioning

confidence: 99%

Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview

et al. 2018

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During the past few years, silver nanoparticles (AgNPs) became one of the most investigated and explored nanotechnology-derived nanostructures, given the fact that nanosilver-based materials proved to have interesting, challenging, and promising characteristics suitable for various biomedical applications. Among modern biomedical potential of AgNPs, tremendous interest is oriented toward the therapeutically enhanced personalized healthcare practice. AgNPs proved to have genuine features and impressive potential for the development of novel antimicrobial agents, drug-delivery formulations, detection and diagnosis platforms, biomaterial and medical device coatings, tissue restoration and regeneration materials, complex healthcare condition strategies, and performance-enhanced therapeutic alternatives. Given the impressive biomedical-related potential applications of AgNPs, impressive efforts were undertaken on understanding the intricate mechanisms of their biological interactions and possible toxic effects. Within this review, we focused on the latest data regarding the biomedical use of AgNP-based nanostructures, including aspects related to their potential toxicity, unique physiochemical properties, and biofunctional behaviors, discussing herein the intrinsic anti-inflammatory, antibacterial, antiviral, and antifungal activities of silver-based nanostructures.

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“…The reason is attributed to the cell wall of the gram positive bacteria being more robust and therefore tends to be resistant to attacks [65,66]. The antibacterial activity of the silver nanoparticles in this research may be considered to be effective when compared with some literature reports [67]. The extracts from Guar leaf have been reported to be active against bacteria organisms [68], but the AgNPs have higher activity due to the surface characteristics of the nanoparticles which enables the isolates to be absorbed on the surfaces.…”

Section: Antibacterial Analysismentioning

confidence: 82%

Silver nanoparticles mediated by extract of Guar plant (Cyamopsis tetragonoloba), and evaluation of their photocatalytic and antibacterial properties

Elemike¹,

Saiyed²,

Ekennia³

et al. 2019

Adv. Mater. Lett.

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The green synthesis of silver nanoparticles using Cyamopsis tetragonoloba plant extract, and their photocatalytic and antibacterial properties is reported. Three precursor concentrations of 1 mM, 2 mM and 5 mM were used, and at two different ratios of 1:5 and 1:10 plant extract to the precursor. The formation of the nanoparticles was followed by the periodic study of surface plasmon resonance using the UV-visible spectroscopy, which revealed the formation of nanoparticles with regular bands after 45 min. of reaction. Fourier transform infrared spectroscopy was used to study the functional groups present in the plant biomolecules which aided the reduction and stabilization of the nanoparticles. Transmission electron microscopy analysis and X-ray diffraction pattern showed the particle sizes and crystalline structures, while the zeta potential values indicated the stability of the nanoparticles. The 5 mM concentration gave the largest particle sizes of about 12.90 nm and the most stable particles. The photocatalytic properties of the particles studied using Methyl red showed a low efficiency of 17.85% degradation achieved under 2 h. The antibacterial potency of the nanoparticles was screened against some Gram-negative and Gram-positive bacteria. The results showed that the nanoparticles have good antibacterial activities.

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Bio-synthesis and antimicrobial activity of silver nanoparticles using anaerobically digested parthenium slurry

Cited by 45 publications

References 19 publications

Silver Nanoparticles Synthesized by Using the Endophytic Bacterium Pantoea ananatis are Promising Antimicrobial Agents against Multidrug Resistant Bacteria

Silver Nanoparticles Synthesized by Using the Endophytic Bacterium Pantoea ananatis are Promising Antimicrobial Agents against Multidrug Resistant Bacteria

Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview

Silver nanoparticles mediated by extract of Guar plant (Cyamopsis tetragonoloba), and evaluation of their photocatalytic and antibacterial properties

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