Evaluation of the in vitro anti-inflammatory and anti-Helicobacter pylori activities of chitosan-based biomaterials modified with copper oxide nanoparticles

Elmehbad, Noura Y.; Mohamed, Nadia A.; Abd El-Ghany, Nahed A.; Abdel-Aziz, Marwa M.

doi:10.1016/j.ijbiomac.2023.127277

Cited by 14 publications

(5 citation statements)

References 56 publications

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“…The ability to reuse adsorbents is deemed to be one of the most significant characteristics that reduces the costs of adsorption techniques via the renewal of adsorbents [12].…”

Section: Desorption Studiesmentioning

confidence: 99%

“…The adsorption capacity and the % removal efficiency of the adsorbent for the dyes were calculated based on Equations ( 1)-(3) [12]:…”

Section: Batch Adsorption Testsmentioning

confidence: 99%

“…Secondly, 10 mg of the adsorbent was individually soaked in 10 mL of various desorption media (EtOH, MeOH, MeCOMe, and a 0.1 N solution of NaOH) at 25 • C overnight. The quantity of the dye desorbed from the adsorbent could be determined by employing Equation ( 14): % Dye desorption = q d /q a × 100 (14) where q d is the amount of dye desorbed from the adsorbent surface (mg g −1 ) and q a is the amount of dye adsorbed onto the adsorbent (mg g −1 ) [12].…”

Section: Desorption Studymentioning

confidence: 99%

“…Thus, it should be chemically modified to improve its stability in acidic media and make it a superb option as an adsorbent for dyes. Modification was achieved via the insertion of functional groups into its structure [12,13]; via grafting using functionalizing monomers [14]; through the polymer blending [15]; and via the incorporation of chemical cross-linkers [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…The integration of Equation ( 11) provides the linearized form of the pseudo-secondorder equation: Equation (12).…”

mentioning

confidence: 99%

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Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Alfuraydi,

Al-Harby,

Alminderej

et al. 2023

Gels

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In our previous work, three different weight ratios of chitosan/PVA (1:3, 1:1, and 3:1) were blended and then cross-linked with trimellitic anhydride isothiocyanate (TAI) at a concentration depending on their chitosan content, obtaining three hydrogels symbolized by H13, H11, and H31. Pure chitosan was cross-linked with TAI, producing a hydrogel symbolized by H10. Further, three H31-based silver nanoparticles composites (H31/AgNPs1%, H31/AgNPs3%, and H31/AgNPs5%) were also synthesized. They were investigated, for the first time in this study, as adsorbents for Congo Red (CR) and Crystal Violet (CV) dyes. The removal efficiency of CR dye increased with increasing H10 content in the hydrogels, and with increasing AgNP content in the composites, reaching 99.91% for H31/AgNPs5%. For CV dye, the removal efficiency increased with the increase in the PVA content. Furthermore, the removal efficiency of CV dye increased with an increasing AgNP content, reaching 94.7% for H31/AgNPs5%. The adsorption capacity increased with the increase in both the initial dye concentration and temperature, while with an increasing pH it increased in the case of CV dye and decreased in the case of CR dye. The adsorption of CV dye demonstrated that the Freundlich isotherm model is better suited for the experimental results. Moreover, the results were best fitted with pseudo-second-order kinetic model.

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“…The ability to reuse adsorbents is deemed to be one of the most significant characteristics that reduces the costs of adsorption techniques via the renewal of adsorbents [12].…”

Section: Desorption Studiesmentioning

confidence: 99%

“…The adsorption capacity and the % removal efficiency of the adsorbent for the dyes were calculated based on Equations ( 1)-(3) [12]:…”

Section: Batch Adsorption Testsmentioning

confidence: 99%

Section: Desorption Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The integration of Equation ( 11) provides the linearized form of the pseudo-secondorder equation: Equation (12).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Alfuraydi,

Al-Harby,

Alminderej

et al. 2023

Gels

Self Cite

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Synthesis of Novel Antimicrobial and Food‐Preserving Hydrogel Nanocomposite Films Based on Carboxymethylcellulose

Elmehbad,

Mohamed,

El‐Ghany

2024

Starch Stärke

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The microbial resistance to the traditional antibiotics causes serious health problems and increases day by day. Thus, there is a pressing need to discover alternative antimicrobial agents of different nature than that of the conventional antibiotics. For this, novel hydrogel nanocomposite films are prepared by chemical crosslinking grafting of carboxymethyl cellulose with N,N′‐methylene‐bis‐acrylamide (CMC‐g‐MBA), which subsequently followed by loading two different weight ratios of titanium oxide nanoparticles (TiO2NPs), such as 3% (CMC‐g‐MBA/TiO2NPs‐3%) and 5% (CMC‐g‐MBA/TiO2NPs‐5%) wt%. Their chemical structure and surface morphology are confirmed using appropriate analytical techniques. Their antimicrobial activity can be arranged as follows: CMC‐g‐MBA/TiO2NPs‐5% composite > CMC‐g‐MBA/TiO2NPs‐3% composite > CMC‐g‐MBA hydrogel. While, the native CMC has no observable antimicrobial effect. CMC‐g‐MBA/TiO2NPs‐3% composite imparts good barrier properties to the coated tomato fruits, delaying their spoilage and protecting them from the environmental microbes compared to the uncoated ones. CMC‐g‐MBA/TiO2NPs‐5% composite is safe on the normal human cells. Thus, incorporation of both MBA and TiO2NPs into CMC greatly develops its antimicrobial activity and provides a wonderful approach to attain promising materials that can efficiently compete with conventional antibiotics.

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Biogenic Nanoparticles as Safer Alternatives for Gastric Ulcers: An Update on Green Synthesis Methods, Toxicity, and Their Efficacy in Controlling Inflammation

Yadav,

Mali,

Pandey

2024

Biol Trace Elem Res

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Evaluation of the in vitro anti-inflammatory and anti-Helicobacter pylori activities of chitosan-based biomaterials modified with copper oxide nanoparticles

Cited by 14 publications

References 56 publications

Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Synthesis of Novel Antimicrobial and Food‐Preserving Hydrogel Nanocomposite Films Based on Carboxymethylcellulose

Biogenic Nanoparticles as Safer Alternatives for Gastric Ulcers: An Update on Green Synthesis Methods, Toxicity, and Their Efficacy in Controlling Inflammation

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