Arabic Gum as Bio-Synthesizer for Ag–Au Bimetallic Nanocomposite Using Seed-Mediated Growth Technique and Its Biological Efficacy

Emam, Hossam E.

doi:10.1007/s10924-018-1331-3

Cited by 71 publications

(24 citation statements)

References 65 publications

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“…Therefore, the zetasizer data further conrmed the TEM observations for the successive seeding of small sized and controllable CQDs. 33,43 Generally, the analyzed data demonstrates the compatibility of alkali hydrolyzed guar gum in the generation of hydrophilic CQDs under hydrothermal conditions, however, performing the reaction for 12 hours was more preferable to generate well-dispersed/homogeneous and highly sizeregulated CQDs.…”

Section: Resultsmentioning

confidence: 93%

“…Compared with biologically active metal-based nanostructures and metal organic frameworks that were recently studied in numerous reports, [43][44][45][46] the as-prepared CQDs exhibited signicantly lower values of MIC. This reected the superior biocidal potentiality of the synthesized CQDs, in addition to their low toxicity, biodegradability, biocompatibility and cost-effectiveness.…”

Section: Fluorescence Detection Of Zn 2+ and Hg 2+mentioning

confidence: 90%

“…CQDs are reported to be widely applicable in various elds such as drug delivery, photodynamic therapy, photocatalysis, electro-catalysis, bio-sensing, chemical sensing, bioimaging and optoelectronic devices. 41,42 A wide range of antimicrobial agents as antiseptics and disinfectants are used for the inactivation of microorganisms in order to prevent hazardous infections, [43][44][45][46] however, these antimicrobial agents are disadvantageous due to their toxicity and extreme irritation, resulting in more dangerous health problems such as mucous membrane irritation and contact dermatitis. Additionally, some microbial species adapt and become resistant against such reagents over time.…”

Section: Introductionmentioning

confidence: 99%

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Environmentally exploitable biocide/fluorescent metal marker carbon quantum dots

Ahmed

Emam

2020

RSC Adv.

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Section: Resultsmentioning

confidence: 93%

Section: Fluorescence Detection Of Zn 2+ and Hg 2+mentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Environmentally exploitable biocide/fluorescent metal marker carbon quantum dots

Ahmed

Emam

2020

RSC Adv.

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“…Kumari et al [61] reported the formation of nanoalloy Ag-Au BMNPs by using the juice of pomegranate seeds as a bioreductant. Recent studies by Emma [62] reported the production of nanoalloy Ag-Au BMNPs using a green approach by Arabic gum. It was observed that increasing the reaction temperature from 25 to 70 • C resulted in a well dispersed and smaller bimetallic NPs, which led to a size reduction from 6.5 to 3.1 nm.…”

Section: Ag-au Bimetallic Nanoparticlesmentioning

confidence: 99%

Bactericidal Antibacterial Mechanism of Plant Synthesized Silver, Gold and Bimetallic Nanoparticles

Fanoro

Oluwafemi

2020

Pharmaceutics

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As the field of nanomedicine develops and tackles the recent surge in antibiotic resistance, there is a need to have an in-depth understanding and a synergistic view of research on the effectiveness of a metal nanoparticle (NP) as an antibacterial agent especially their mechanisms of action. The constant development of bacterial resistance has led scientists to develop novel antibiotic agents. Silver, gold and its bimetallic combination are one of the most promising metal NPs because they show strong antibacterial activity. In this review we discuss the mode of synthesis and the proposed mechanism of biocidal antibacterial activity of metal NPs. These mechanisms include DNA degradation, protein oxidation, generation of reactive oxygen species, lipid peroxidation, ATP depletion, damage of biomolecules and membrane interaction.

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“…Such surfaces have been decorated with AgNPs using different methods such as chemical deposition, photo–chemical deposition, physical vapor deposition and sputtering deposition techniques [21]. However, in situ formation of AgNPs is a simple and versatile strategy that is wildly used to overcome the complicated multi–steps procedures that limited many applications [24, 25, 26].…”

Section: Introductionmentioning

confidence: 99%

Facile coating of urinary catheter with bio–inspired antibacterial coating

Yassin

Elkhooly

Elsherbiny

et al. 2019

Heliyon

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A B S T R A C TFormation of bacterial biofilm on indwelling urinary catheters usually causes catheter-associated urinary tract infections (CAUTIs) that represent high percent of nosocomial infections worldwide. Therefore, coating urinary catheter with antibacterial and antifouling coating using facile technique is in great demand. In this study, commercial urinary catheter was coated with a layer of the self-polymerized polydopamine which acts as active platform for the in situ formation of silver nanoparticle (AgNPs) on catheter surface. The formed coating was intensively characterized using spectroscopic and microscopic techniques. The coated catheter has the potential to release silver ion in a sustained manner with a concentration of about 2-4 μg ml À1 . Disk diffusion test and colony forming unites assay verified the significant bactericidal potential of the AgNPs coated catheter against both gram-positive and gram-negative bacteria as a consequence of silver ion release. In contrast to commercial catheter, the AgNPs coated catheter prevented the adherence of bacterial cells and biofilm formation on their surfaces. Interestingly, scanning electron microscope investigations showed that AgNPs coated catheter possess greater antifouling potential against gram-positive bacteria than against gram-negative bacteria. Overall, the remarkable antibacterial and antifouling potential of the coated catheter supported the use of such facile approach for coating of different medical devices for the prevention of nosocomial infections.

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Arabic Gum as Bio-Synthesizer for Ag–Au Bimetallic Nanocomposite Using Seed-Mediated Growth Technique and Its Biological Efficacy

Cited by 71 publications

References 65 publications

Environmentally exploitable biocide/fluorescent metal marker carbon quantum dots

Environmentally exploitable biocide/fluorescent metal marker carbon quantum dots

Bactericidal Antibacterial Mechanism of Plant Synthesized Silver, Gold and Bimetallic Nanoparticles

Facile coating of urinary catheter with bio–inspired antibacterial coating

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