Antimicrobial activity of graphene-based nanomaterials

Hossain, Kaizar; Rafatullah, Mohd; Ahmad, Akil; Ismail, Norli; Maruthi, Avasn Y.

doi:10.1016/b978-0-12-815811-1.00016-8

Cited by 9 publications

(6 citation statements)

References 154 publications

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“…GO exhibits bactericidal activity against Gram-negative and Gram-positive bacteria [ 60 ]. Our microbiological studies confirmed the above statements, as shown in Figure 6 , showing changes in the total number of microorganisms (OLD) in poultry meat during storage under manufactured composites.…”

Section: Resultsmentioning

confidence: 99%

The Functional and Application Possibilities of Starch/Chitosan Polymer Composites Modified by Graphene Oxide

Krystyjan

Khachatryan

et al. 2022

IJMS

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This study describes functional properties of bionanocomposites consisting of starch/chitosan/graphene oxide (GO) obtained using the green synthesis method, such as water-barrier and optical properties, as well as the rate of degradation by enzymatic and acid hydrolysis. The toxicity of the composites and their effects on the development of pathogenic microflora during storage of meat food products was also investigated. Although the results showed that the barrier properties of the composites were weak, they were similar to those of biological systems. The studies carried out confirmed the good optical properties of the composites containing chitosan, which makes it possible to use them as active elements of packaging. The susceptibility of starch and chitosan films to enzymatic and acid hydrolyses indicates their relatively high biodegradability. The lack of toxicity and the high barrier against many microorganisms offer great potential for applications in the food industry.

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Section: Resultsmentioning

confidence: 99%

The Functional and Application Possibilities of Starch/Chitosan Polymer Composites Modified by Graphene Oxide

Krystyjan

Khachatryan

et al. 2022

IJMS

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“…Elevated ROS levels can oxidize fats and proteins and break the DNA strand [80][81][82]. Both physical and chemical antibacterial activity of graphene and GO have been widely reported [83]. Physical degradation of the cells involves the direct contact of the sharp edges of graphene with the bacterial membrane which can cut off a large portion of the cell membrane and negatively affect the lipid layers and membrane phospholipids [11,84].…”

Section: Antibacterial Activitymentioning

confidence: 99%

Synthesis, physicochemical properties and antibacterial activity of hybrid nanocomposite of ZnS nanoparticles- decorated GO@CS

2020

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In this study, green-ZnS nanoparticles (g-ZnS NPs) were synthesized via chemical precipitation using aqueous solutions of ZnCl2 and Na2S at the presence of green tea solution. The ternary hybrid nanocomposite of green-ZnS@ Graphen oxide@Chitosan (g-ZnS@GO@CS) was also prepared through in situ chemical deposition of g-ZnS nanoparticles on GO@CS composite. The obtained nanostructures were characterized by FTIR, SEM, XRD, EDX, X-map, photoluminescence (PL), TGA, and UV-DRS analyses. Based on the results, the g-ZnS@GO@CS composite possessed cauliflower morphology in which ZnS NPs were homogeneously distributed on the composite matrix. Crystallographic investigations revealed the fcc phase of ZnS NPs. Moreover, the crystallite sizes of ZnS, g-ZnS, and g-ZnS@GO@CS samples were estimated as 28.8, 17.9, and 14.8 nm, respectively. Using UV–vis spectroscopy, the bandgap energy of g-ZnS@GO@CS composite, pure ZnS, and g-ZnS were determined 3.02, 3.37, and 4.42 eV, respectively; suggesting a significant reduction in the bandgap of the composite sample due to the synergic effect of GO@CS. Among various g-ZnS@GO@CS composites with different GO@CS contents (4, 8, and 12 wt%) the sample containing 4 wt% GO@CS exhibited the highest photoluminescence intensity. The g-ZnS@GO@CS nanocomposite displayed higher antibacterial activity (growth inhibition zone of 27.6 mm) on Gram-positive Staphylococcus aureus bacteria compared to g-ZnS NPs (growth inhibition zone of 23.5 mm). No significant bioactivity was, however, observed against Gram-negative bacteria (Escherichia coli). According to the results, g-ZnS@GO@CS composite with reduced bandgap, enhanced PL intensity, and smaller ZnS NPs can offer better antibacterial activity as compared to pristine g-ZnS NPs.

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“…Chemical interaction develops between the p-p stacking of graphene and the aromatic rings of PVK. 52 The zwitterionic effect, production of quaternary ammonium salts, grafting, and multifunctional, polyionic complex formation of polymer nanocomposites facilitate the inhibition of microbial growth on any surface. There are several GRPNCs, such as graphene-reinforced and Ni-P-incorporated polyethylenimine, graphene-PMMA, graphene-PLA, graphene-polyindole, and graphene-polyurethanes, that can eliminate 99.99% of bacterial growth due to their efficient dispersion rate, controlled flow direction, and limited agglomeration effect, depending on their synthesis routes.…”

Section: Graphene-reinforced Polymer Nanocomposites (Grpncs)mentioning

confidence: 99%

Carbon-reinforced Polymer Nanocomposites Against Infectious Diseases

Parhi,

Bharatiya,

Biswal

et al. 2024

Smart Nanomaterials for Infectious Diseases

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Infectious diseases consistently pose challenges for the frontline sectors and at the same time may cause havoc in the social sector. Pathogenic microbes such as bacteria, viruses, fungi, algae, and protozoa are the main culprits in the history of pandemics and epidemics. The year 2019 witnessed the biggest pandemic ever in history, caused by SARS-CoV-19 microbes whose existence remains between living and non-living species. Long before tackling the problems caused by microorganisms, researchers were continuously working in different areas of science and technology. In this perspective, targeted vaccines and drugs have been successfully administered for medical use. During the last two decades, nanoscience and nanotechnology have been strongly involved in the design of nanomaterials for effective use as drugs or vaccines against infectious diseases. In this regard, nanocomposites play a major role in high pharmacological and mechanical responses. Designing biodegradable and biocompatible nanocomposites with excellent bioactivity has always attracted the attention of the pharma industry owing to the burgeoning occurrence of new infectious diseases. Further, carbon-reinforced polymer nanocomposites have gained importance in the fight against infectious diseases owing to their high antimicrobial efficacy. In this chapter, the properties and uses of carbon-reinforced polymer nanocomposites with potential pharmacological activity are discussed in detail in the context of different classifications of infectious agents.

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Antimicrobial activity of graphene-based nanomaterials

Cited by 9 publications

References 154 publications

The Functional and Application Possibilities of Starch/Chitosan Polymer Composites Modified by Graphene Oxide

The Functional and Application Possibilities of Starch/Chitosan Polymer Composites Modified by Graphene Oxide

Synthesis, physicochemical properties and antibacterial activity of hybrid nanocomposite of ZnS nanoparticles- decorated GO@CS

Carbon-reinforced Polymer Nanocomposites Against Infectious Diseases

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