Development of bionanocomposite materials and its use in coating of Ras cheese

Youssef, Ahmed M.; Assem, F. M.; Abdel-Aziz, Mahmoud E.; Elaaser, Mostafa; Ibrahim, Osama O; Mahmoud, Mona; El-Salam, M. H. Abd

doi:10.1016/j.foodchem.2018.07.114

Cited by 105 publications

(41 citation statements)

References 27 publications

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“…Similar findings were reported by Alippilakkotte et al [20]. Moreover, some papers reported that owing to the increased surface hydrophobicity, accreting the amount of TiO2 nanoparticles tends to prevent the water drop from spreading over the film surface [21,22].…”

Section: Contact Anglesupporting

confidence: 84%

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Zhang

Ahmed

et al. 2019

Coatings

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In this study, PLA/TiO2 composites materials were prepared via electrospinning and solution casting processes. By testing the mechanical properties, water contact angle, water vapor permeability, and solubility of the composite nanofibers and films, the comprehensive performances of the two types of nanocomposites were analyzed. The results show that maximum tensile strengths of 2.71 ± 0.11 MPa and 14.49 ± 0.13 MPa were achieved for the nanofibers and films at a TiO2 content of 0.75 wt.%. Moreover, the addition of TiO2 significantly cut down the water vapor transmittance rate of the nanofibers and films while significantly improving the water solubility. Further, the antibacterial activity increased under UV-A irradiation for a TiO2 nanoparticle content of 0.75 wt.%, and the nanofiber and films exhibited inhibition zones of 4.86 ± 0.50 and 3.69 ± 0.40 mm for E. coli, and 5.98 ± 0.77 and 4.63 ± 0.45 mm for S. aureus, respectively. Overall, the performance of the nanofiber was better than that of the film. Nevertheless, both the nanocomposite membranes satisfied the requirements of food packaging materials.

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Section: Contact Anglesupporting

confidence: 84%

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Zhang

Ahmed

et al. 2019

Coatings

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“…The water contact angle is often used as a criterion for evaluating surface smoothness while water absorption reflects its quality in terms of hydrophobicity and hydrophilicity . From Fig.…”

Section: Resultsmentioning

confidence: 99%

Preparation and properties of modified graphene oxide incorporated waterborne polyurethane acrylate

Yin

Muhammad

et al. 2019

Polymer International

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In this study, a new modifier (KPG) was prepared by modifying graphene oxide with -glycidoxypropyl trimethoxysilane (KH560) and polydimethylsiloxane (PDMS). KPG was in turn added to aqueous urethane acrylate for the fabrication of waterborne polyurethane polyacrylate emulsion modified with KH560-PDMS composite (KPG/WPUA). Textural characterizations of the KPG/WPUA coating were achieved via Fourier transform infrared, SEM, TGA and AFM techniques, which revealed that the KPG/WPUA film possessed a smooth surface. The synthesized KPG/WPUA films were tested for mechanical properties, hydrophobicity and acid/water corrosion performance which suggested their highly hydrophobic surface. KPG/WPUA with 0.1% KPG showed a contact angle of 118.35 ∘ , 30.35 ∘ higher than that of pristine WPUA. The KPG/WPUA film exhibited higher thermal stability, i.e. a 5% weight loss temperature of 305 ∘ C, which was 30 ∘ C higher than that of pristine WPUA film. The Young's modulus and elongation at break of the KPG/WPUA film were 34.1 MPa and 74.88% respectively, which were higher than that of WPUA film. Furthermore, KPG/WPUA films exhibited greater resistance (without obvious blistering and the white spotting phenomenon) to H 2 O 2 , HCl and water corrosion than pristine WPUA. The superior performance of KPG/WPUA films was attributed to the network chain structure formed upon the introduction of KPG into WPUA. The outstanding performance of KPG/WPUA films in terms of mechanical properties, thermal stability and high resistance to acidic and water corrosion makes them interesting alternative contenders for target applications.

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“…The results indicated that TiO 2 nanospheres exhibited the best antimicrobial activity against methicillin-resistant Staphylococcus aureus 97-7 and 622-4 when the NPs were irradiated with UVA radiation for 60 minutes, which increased their antimicrobial properties in comparison to commercial TiO 2 NPs [38]. Youssef et al (2018) developed a biocomposite in the nanoscale with 2 wt % of TiO 2 NPs which prevented mold growth on a cheese surface during an antimicrobial assay [3].…”

Section: Types Of Metal-based Antimicrobial Nanoparticlesmentioning

confidence: 99%

“…The presence of mold and yeast, mainly in food sources, has also attracted research interest [3,4]. Although several solutions have been proposed, microorganism incidence will continue to increase and will remain a complicated challenge to overcome.…”

Section: Review Introductionmentioning

confidence: 99%

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

Correa

Martínez

Vidal

et al. 2020

Beilstein J. Nanotechnol.

104

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The investigation of novel nanoparticles with antimicrobial activity has grown in recent years due to the increased incidence of nosocomial infections occurring during hospitalization and food poisoning derived from foodborne pathogens. Antimicrobial agents are necessary in various fields in which biological contamination occurs. For example, in food packaging they are used to control food contamination by microbes, in the medical field the microbial agents are important for reducing the risk of contamination in invasive and routine interventions, and in the textile industry, they can limit the growth of microorganisms due to sweat. The combination of nanotechnology with materials that have an intrinsic antimicrobial activity can result in the development of novel antimicrobial substances. Specifically, metal-based nanoparticles have attracted much interest due to their broad effectiveness against pathogenic microorganisms due to their high surface area and high reactivity. The aim of this review was to explore the state-of-the-art in metal-based nanoparticles, focusing on their synthesis methods, types, and their antimicrobial action. Different techniques used to synthesize metal-based nanoparticles were discussed, including chemical and physical methods and “green synthesis” methods that are free of chemical agents. Although the most studied nanoparticles with antimicrobial properties are metallic or metal-oxide nanoparticles, other types of nanoparticles, such as superparamagnetic iron-oxide nanoparticles and silica-releasing systems also exhibit antimicrobial properties. Finally, since the quantification and understanding of the antimicrobial action of metal-based nanoparticles are key topics, several methods for evaluating in vitro antimicrobial activity and the most common antimicrobial mechanisms (e.g., cell damage and changes in the expression of metabolic genes) were discussed in this review.

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Development of bionanocomposite materials and its use in coating of Ras cheese

Cited by 105 publications

References 27 publications

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Preparation and properties of modified graphene oxide incorporated waterborne polyurethane acrylate

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

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