Biosynthesis, characterization and antibacterial activity of silver nanoparticles using an endophytic fungal supernatant of Raphanus sativus

Singh, Tej; Kumari, Jyoti; Patnaik, Amar; Singh, Ajeet; Chauhan, Ranchan; Chandel, Shalini

doi:10.1016/j.jgeb.2017.04.005

Cited by 176 publications

(84 citation statements)

References 46 publications

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“…Several mechanisms accounted for antibacterial effects nanoparticles, e.g., rupture via attachment to the negatively charged bacterial cell wall, reacts with the sulfhydryl groups and causing respiration blockage and cell death, proton motive force destruction or bind with DNA molecules and lead to helical disruption . In addition, nanoparticles possess extremely large surface area that provides better contact and interaction with bacterial cells . As seen in our findings, AgNPs exhibited higher antibacterial effects against Gram‐positive strains.…”

Section: Discussionsupporting

confidence: 64%

Antibacterial and antibiofilm activity of nanochelating based silver nanoparticles against several nosocomial pathogens

Hoseini‐Alfatemi

Karimi

Armin

et al. 2018

Applied Organom Chemis

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The emergence of multi-drug resistant (MDR) bacteria and dynamic pattern of infectious diseases demand to develop alternative and more effective therapeutic strategies. Silver nanoparticles (AgNPs) are among the most widely commercialized engineered nanomaterials, because of their unique properties and increasing use for various applications in nanomedicine. This study for the first time aimed to evaluate the antibacterial and antibiofilm activities of newly synthesized nanochelating based AgNPs against several Gram-positive and -negative nosocomial pathogens. Nanochelating technology was used to design and synthesize the AgNPs. The cytotoxicity was tested in human cell line using the MTT assay. AgNPs minimal inhibitory concentration (MIC) was determined by standard broth microdilution. Antibiofilm activity was assayed by a microtiter-plate screening method. The two synthesized AgNPs including AgNPs (A) with the size of about 20-25 nm, and AgNPs (B) with 30-35 nm were tested against Staphylococcus aureus, Staphylococcus epidermidis, Acinetobacter baumannii, and Pseudomonas aeruginosa. AgNPs exhibited higher antibacterial activity against Grampositive strains. AgNPs were found to significantly inhibit the biofilm formation of tested strains in concentration 0.01 to 10 mg/mL. AgNPs (A) showed significant effective antibiofilm activity compared to AgNPs (B).In summary, our results showed the promising antibacterial and antibiofilm activity of our new nanochelating based synthesized AgNPs against several nosocomial pathogens.

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Section: Discussionsupporting

confidence: 64%

Antibacterial and antibiofilm activity of nanochelating based silver nanoparticles against several nosocomial pathogens

Hoseini‐Alfatemi

Karimi

Armin

et al. 2018

Applied Organom Chemis

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“…These compounds (secondary metabolites) are not only serves as antimicrobial agents but also provide a prototype structure for chemical synthesis of new antibacterial agents. There are several examples which indicated fungal metabolites serve as source directly or indirectly for production of drug molecules [16,17]. Many studies have been carried out to evaluate antibacterial activity of endophytic fungi and for isolation new antibacterial compounds [11,18].…”

Section: Discussionmentioning

confidence: 99%

Green Synthesis, Characterization and Antibacterial Activity of Silver Nanoparticles of Endophytic Fungi Aspergillus terreus

Rani¹,

Sharma²,

Chaturvedi³

et al. 2017

J Nanomed Nanotechnol

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“…There are several reports demonstrating the biosynthesis of AgNPs by fungi species, mostly of them related to the use of endophytic fungi (those isolated from parts of plants) (Devi & Joshi, 2015;Qian et al, 2013;Singh et al, 2017;Sogra Fathima & Balakrishnan, 2014). The main genera of fungi reported as efficient in extracellular biosynthesis of AgNPs include Fusarium spp.…”

Section: Biosynthesis Of Agnps By Fungi Speciesmentioning

confidence: 99%

Application of silver nanoparticles in food packages: a review

et al. 2019

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Silver nanoparticles (AgNPs) are antimicrobial agents that have a wide spectrum of action, including against pathogenic bacteria and spoilage fungi. However, their mechanism of action is not completely clarified. Nowadays, scientific interest on biological synthesis of AgNPs is growing, with emphasis in their extracellular biosynthesis by microbial cells, as it is the most reliable and ecologically correct method for production, yielding no toxic residues. AgNPs may be incorporated to biodegradable and non-biodegradable polymers for the production of food packages with antimicrobial properties, leading to greater safety and longer shelf life. However, it is important to carry out migration tests for new food packages incorporated with AgNPs, based on the effective levels for their inclusion in the packaging materials.

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Biosynthesis, characterization and antibacterial activity of silver nanoparticles using an endophytic fungal supernatant of Raphanus sativus

Abstract: Graphical abstract

Cited by 176 publications

References 46 publications

Antibacterial and antibiofilm activity of nanochelating based silver nanoparticles against several nosocomial pathogens

Antibacterial and antibiofilm activity of nanochelating based silver nanoparticles against several nosocomial pathogens

Green Synthesis, Characterization and Antibacterial Activity of Silver Nanoparticles of Endophytic Fungi Aspergillus terreus

Application of silver nanoparticles in food packages: a review

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