Mechanical, Thermal and Antimicrobial Properties of Chitosan-Based-Nanocomposite with Potential Applications for Food Packaging

Rodrigues, Cleide; Mello, Josiane Maria Muneron de; Dalcanton, Francieli; Macuvele, Domingos Lusitâneo Pier; Padoin, Natan; Fiori, Márcio Antônio; Soares, Cíntia; Riella, Humberto Gracher

doi:10.1007/s10924-020-01678-y

Cited by 94 publications

(58 citation statements)

References 56 publications

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“…The initial weight loss of the films at ≈80-85 • C is due to moisture losses [39]. At this stage, the percentage of weight loss of the control (chitosan/gelatin) film was more (≈15%) compared to that of the nanocomposite films (≈7%), mainly because of different amount of moisture in the films since incorporation of ZnO NPs into chitosan-gelatin matrix increases compactness leading to a lower moisture content in the nanocomposite films [40]. A second weight loss was observed at ≈120-140 • C for control and at about ≈160-180 • C for the nanocomposite films.…”

Section: Thermal Stabilitymentioning

confidence: 98%

Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging

Kumar

Mudai

Roy

et al. 2020

Foods

118

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In the context of emerging global concerns with synthetic plastic packaging, alternative natural biodegradable packaging materials are gaining increasing attention for food packaging applications. In this study, chitosan and gelatin nanocomposite hybrid films containing green synthesized zinc oxide (ZnO) nanoparticles (NPs) were developed and microstructural properties were studied. Antimicrobial activity of the developed films was evaluated using both Gram negative (Escherichia coli) and Gram positive bacteria (Staphylococcus aureus). Green synthesis protocol was used for the precipitation of ZnO NPs using fruit extract of Cassia fistula. The as-synthesized polyhedral ZnO NPs were in the range of 20–40 nm (average size ≈29 nm). Reinforcement with ZnO NPs in the hybrid films lead to improved thermal stability, elongation-at-break (EAB), and compactness properties. The developed films with 2% and 4% ZnO NPs showed a smooth, compact, and heterogeneous surface morphology compared to the control (chitosan-gelatin hybrid) films. Disc diffusion assays showed that the nanocomposite film had significant antimicrobial activity against E. coli. The developed hybrid nanocomposite films have potential to be developed as biodegradable alternative for postharvest packaging of fresh fruits and vegetables.

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Section: Thermal Stabilitymentioning

confidence: 98%

Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging

Kumar

Mudai

Roy

et al. 2020

Foods

118

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“…Nanocomposites based upon ZnO-NPs are widely used for the development of different optoelectronic, electronic, sensors, collar cells, etc., devices (see, for example [ 1 , 2 , 3 ]). Recently, there were published significant publications about the potential use of ZnO-NPs that include flexible devices such as supercapacitance [ 4 ], flexible piezoelectric nanogenerators with ZnO-polyvinylidene fluoride (PVDF) [ 5 , 6 ], piezoelectric vibration sensors based on polydimethylsiloxane (PDMS) and ZnO nanoparticle [ 7 ], soft thermoplastic material with polyurethane matrix [ 8 ], poly (ethylene oxide) and poly (vinyl pyrrolidone) blend matrix incorporated with zinc oxide (ZnO) nanoparticles for optoelectronic and microelectronic devices [ 9 ], gate transistors with ZnO and ethyl cellulose [ 10 ], chitosan-ZnO (CS-ZnO) nanocomposite for packing applications [ 11 , 12 , 13 ], CS-ZnO as antibacterial agent [ 13 , 14 , 15 ], and CS-ZnO nanocomposite for supercapacitor [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, chitosan is a hydrophilic polymer with NH 2 and OH side groups which can interact with ZnO nanoparticles via hydrogen bonding and form nanocomposites with new properties [ 17 , 18 , 19 ]. It is noteworthy that the literature reports publications that deal with different methods of CS-ZnO nanocomposite preparation and their antibacterial, optical, photocatalytic activity (see, for example [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]), and mechanical [ 15 , 21 , 22 , 23 ] properties. In the case of mechanical properties, it has been reported that the ZnO content improves mechanical properties not only in CS-ZnO composite [ 15 , 22 , 23 ] but also in CS-cellulose-ZnO [ 24 ] and in CS-PVA-ZnO [ 25 ] materials.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-ZnO Nanocomposites Assessed by Dielectric, Mechanical, and Piezoelectric Properties

et al. 2020

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The aim of this work is to structurally characterize chitosan-zinc oxide nanoparticles (CS-ZnO NPs) films in a wide range of NPs concentration (0–20 wt.%). Dielectric, conductivity, mechanical, and piezoelectric properties are assessed by using thermogravimetry, FTIR, XRD, mechanical, and dielectric spectroscopy measurements. These analyses reveal that the dielectric constant, Young’s modulus, and piezoelectric constant (d33) exhibit a strong dependence on nanoparticle concentration such that maximum values of referred properties are obtained at 15 wt.% of ZnO NPs. The piezoelectric coefficient d33 in CS-ZnO nanocomposite films with 15 wt.% of NPs (d33 = 65.9 pC/N) is higher than most of polymer-ZnO nanocomposites because of the synergistic effect of piezoelectricity of NPs, elastic properties of CS, and optimum NPs concentration. A three-phase model is used to include the chitosan matrix, ZnO NPs, and interfacial layer with dielectric constant higher than that of neat chitosan and ZnO. This layer between nanoparticles and matrix is due to strong interactions between chitosan’s side groups with ZnO NPs. The understanding of nanoscale properties of CS-ZnO nanocomposites is important in the development of biocompatible sensors, actuators, nanogenerators for flexible electronics and biomedical applications.

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“…When nanoparticles were presented, the number of interface defects in biopolymer matrix reduced, and this led the molecular movement of CNP molecules. Thus, the deformation capacity of polymeric matrix upon application of tension deformation was promoted, which allowed the films to have a higher elongation capacity until their rupture [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

Corn Starch/Chitosan Nanoparticles/Thymol Bio-Nanocomposite Films for Potential Food Packaging Applications

Othman

Shapi’i

et al. 2021

Polymers

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This work aims to develop corn starch/chitosan nanoparticles/thymol (CS/CNP/Thy) bio-nanocomposite films as potential food packaging materials that can enhance the shelf life of food. CS/CNP/Thy bio-nanocomposite films were prepared by the addition of different concentrations of thymol (0, 1.5, 3.0, 4.5 w/w%) using a solvent casting method. The resulting films were characterized in terms of optical, mechanical, and water vapor permeability (WVP) properties. The addition of thymol was found to reduce the tensile strength (TS), elongation at break (EAB), and Young’s modulus (YM) of the films. Generally, the increment in the concentration of thymol did not significantly affect the TS, EAB, and YM values. The addition of 1.5 w/w% thymol increased the WVP of the films but the WVP reduced with the increase in thymol concentrations. CS/CNP/Thy-3% bio-nanocomposite films demonstrated the potential to lengthen the shelf life of cherry tomatoes packed with the films, whereby the cherry tomatoes exhibited no significant changes in firmness and the lowest weight loss. In addition, no mold growth was observed on the sliced cherry tomatoes that were in direct contact with the films during 7 days of storage, proving the promising application of the films as active food packaging materials.

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Mechanical, Thermal and Antimicrobial Properties of Chitosan-Based-Nanocomposite with Potential Applications for Food Packaging

Cited by 94 publications

References 56 publications

Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging

Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging

Chitosan-ZnO Nanocomposites Assessed by Dielectric, Mechanical, and Piezoelectric Properties

Corn Starch/Chitosan Nanoparticles/Thymol Bio-Nanocomposite Films for Potential Food Packaging Applications

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