Biologically rapid synthesis of silver nanoparticles by
            <i>Sphingobium</i>
            sp. MAH-11
            <sup>T</sup>
            and their antibacterial activity and mechanisms investigation against drug-resistant pathogenic microbes

Akter, Shahina; Huq, Md. Amdadul

doi:10.1080/21691401.2020.1730390

Cited by 89 publications

(62 citation statements)

References 29 publications

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“…Ecofriendly synthesis of various metal NPs has gained considerable interest in different sectors of research and development. Among various metal NPs, silver nanoparticles (AgNPs) have achieved considerable attention, due to their strong antimicrobial, anticancer, catalytic, optical and electrical properties [14,18]. AgNPs are being used as an antimicrobial agent to control pathogens, an anticancer agent to treat different types of cancers, probes for bioimaging, an anti-inflammatory agent and targeted drug delivery system [14,16,18].…”

Section: Introductionmentioning

confidence: 99%

“…Among various metal NPs, silver nanoparticles (AgNPs) have achieved considerable attention, due to their strong antimicrobial, anticancer, catalytic, optical and electrical properties [14,18]. AgNPs are being used as an antimicrobial agent to control pathogens, an anticancer agent to treat different types of cancers, probes for bioimaging, an anti-inflammatory agent and targeted drug delivery system [14,16,18]. AgNPs are also being considered for the utilization in numerous industrial products including hand gel, wound dressings, medical catheter coverings, footwear, etc., due to their strong antimicrobial properties [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Ecofriendly Synthesis of Silver Nanoparticles by Terrabacter humi sp. nov. and Their Antibacterial Application against Antibiotic-Resistant Pathogens

Akter

Lee

Ṣiddiqi

et al. 2020

IJMS

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It is essential to develop and discover alternative eco-friendly antibacterial agents due to the emergence of multi-drug-resistant microorganisms. In this study, we isolated and characterized a novel bacterium named Terrabacter humi MAHUQ-38T, utilized for the eco-friendly synthesis of silver nanoparticles (AgNPs) and the synthesized AgNPs were used to control multi-drug-resistant microorganisms. The novel strain was Gram stain positive, strictly aerobic, milky white colored, rod shaped and non-motile. The optimal growth temperature, pH and NaCl concentration were 30 °C, 6.5 and 0%, respectively. Based on 16S rRNA gene sequence, strain MAHUQ-38T belongs to the genus Terrabacter and is most closely related to several Terrabacter type strains (98.2%–98.8%). Terrabacter humi MAHUQ-38T had a genome of 5,156,829 bp long (19 contigs) with 4555 protein-coding genes, 48 tRNA and 5 rRNA genes. The culture supernatant of strain MAHUQ-38T was used for the eco-friendly and facile synthesis of AgNPs. The transmission electron microscopy (TEM) image showed the spherical shape of AgNPs with a size of 6 to 24 nm, and the Fourier transform infrared (FTIR) analysis revealed the functional groups responsible for the synthesis of AgNPs. The synthesized AgNPs exhibited strong anti-bacterial activity against multi-drug-resistant pathogens, Escherichia coli and Pseudomonas aeruginosa. Minimal inhibitory/bactericidal concentrations against E. coli and P. aeruginosa were 6.25/50 and 12.5/50 μg/mL, respectively. The AgNPs altered the cell morphology and damaged the cell membrane of pathogens. This study encourages the use of Terrabacter humi for the ecofriendly synthesis of AgNPs to control multi-drug-resistant microorganisms.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ecofriendly Synthesis of Silver Nanoparticles by Terrabacter humi sp. nov. and Their Antibacterial Application against Antibiotic-Resistant Pathogens

Akter

Lee

Ṣiddiqi

et al. 2020

IJMS

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“…MAH-11 have activity against multidrugresistant strains of S. aureus, E. coli, and P. aeruginosa. The antimicrobial action arises from the interruption of the reproductive mechanism through cell damage that resulted in bacterial cell death [81].…”

Section: Antimicrobial Activitymentioning

confidence: 99%

“…The enhanced antimicrobial activity arises from the combined effect of individual MNPs. The drugresistant strains such as P. aeruginosa (ampicillinresistant) K. pneumoniae (ampicillin, kanamycin, and gentamycin resistant) are also susceptible to the activity of Ag-Cu nanocomposites [81].…”

Section: Antimicrobial Activitymentioning

confidence: 99%

Advances of Non-Iron Metal Nanoparticles in Biomedicine

Nair¹,

Morsy²,

Shinu³

et al. 2021

J Pharm Pharm Sci

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Metal nanoparticles (MNPs) comprise of nanoparticles originating from metallic elements with additional properties inherent to metal ions. MNPs found applications in various field such as electronics, optics, mechanics, physics etc. There are many reviews on iron MNPs for biomedical application. Hence, in this review, we focus on non-iron MNPs and their vivid biomedical applications. Here, we review the applications of non-iron MNPs in biomedicine such as drug delivery, gene delivery, anticancer activity, antimicrobial activity, tissue engineering, bioimaging, and photodynamic, and photothermal therapies.

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“…Furthermore, comparing with physicochemical approaches, green techniques are able to synthesize NPs with different shapes and unique features under controlled conditions like pH, temperature, etc., (Thakkar et al, 2010;Noruzi et al, 2011). Several techniques have been raised for the eco-friendly synthesis of different NPs using plants (Aygün et al, 2019a), bacteria (Akter and Huq, 2020), fungi (Aygün et al, 2019b), and algae (De-Aragao et al, 2016). Use of microorganisms for the green synthesis of NPs is a cost effective, facile, and ecofriendly process.…”

Section: Introductionmentioning

confidence: 99%

Biogenic Silver Nanoparticles Synthesized by Lysinibacillus xylanilyticus MAHUQ-40 to Control Antibiotic-Resistant Human Pathogens Vibrio parahaemolyticus and Salmonella Typhimurium

Huq

2020

Front. Bioeng. Biotechnol.

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The present study highlights a simple and eco-friendly method for the biosynthesis of silver nanoparticles (AgNPs) using Lysinibacillus xylanilyticus strain MAHUQ-40. Also, the synthesized AgNPs were used to investigate their antibacterial activity and mechanisms against antibiotic-resistant pathogens. Biosynthesis of AgNPs was confirmed by ultraviolet–visible spectroscopy, and then, they were characterized by field emission-transmission electron microscopy (FE-TEM), X-ray diffraction (XRD), dynamic light scattering (DLS), and fourier transform-infrared (FTIR). The toxicity of AgNPs against two pathogenic bacteria was evaluated. The UV–vis spectral scanning showed the peak for synthesized AgNPs at 438 nm. Under FE-TEM, the synthesized AgNPs were spherical with diameter ranges from 8 to 30 nm. The XRD analysis revealed the crystallinity of synthesized AgNPs. FTIR data showed various biomolecules including proteins and polysaccharides that may be involved in the synthesis and stabilization of AgNPs. The resultant AgNPs showed significant antibacterial activity against tested pathogens. The MICs (minimum inhibitory concentrations) and MBCs (minimum bactericidal concentrations) of the AgNPs synthesized by strain MAHUQ-40 were 3.12 and 12.5 μg/ml, respectively, against Vibrio parahaemolyticus and 6.25 and 25 μg/ml, respectively, against Salmonella Typhimurium. FE-TEM analysis showed that the biogenic AgNPs generated structural and morphological changes and damaged the membrane integrity of pathogenic bacteria. Our findings showed the potentiality of L. xylanilyticus MAHUQ-40 to synthesis AgNPs that acted as potent antibacterial material against pathogenic bacterial strains.

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Biologically rapid synthesis of silver nanoparticles by Sphingobium sp. MAH-11 ^T and their antibacterial activity and mechanisms investigation against drug-resistant pathogenic microbes

Abstract: To cite this article: Shahina Akter & Md. Amdadul Huq (2020) Biologically rapid synthesis of silver nanoparticles by Sphingobium sp. MAH-11 T and their antibacterial activity and mechanisms investigation against drug-resistant pathogenic microbes,

Cited by 89 publications

References 29 publications

Ecofriendly Synthesis of Silver Nanoparticles by Terrabacter humi sp. nov. and Their Antibacterial Application against Antibiotic-Resistant Pathogens

Ecofriendly Synthesis of Silver Nanoparticles by Terrabacter humi sp. nov. and Their Antibacterial Application against Antibiotic-Resistant Pathogens

Advances of Non-Iron Metal Nanoparticles in Biomedicine

Biogenic Silver Nanoparticles Synthesized by Lysinibacillus xylanilyticus MAHUQ-40 to Control Antibiotic-Resistant Human Pathogens Vibrio parahaemolyticus and Salmonella Typhimurium

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