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Communication

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

1
Department of Food Engineering and Technology, Central Institute of Technology Kokrajhar, Kokrajhar 783370, Assam, India
2
Functional Materials, Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova Universitets Centrum, 106 91 Stockholm, Sweden
*
Authors to whom correspondence should be addressed.
Foods 2020, 9(9), 1143; https://doi.org/10.3390/foods9091143
Received: 2 July 2020 / Revised: 29 July 2020 / Accepted: 17 August 2020 / Published: 19 August 2020
(This article belongs to the Section Food Packaging and Preservation)
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. View Full-Text
Keywords: green synthesis; ZnO NPs; biopolymer; active packaging; antimicrobial activity; composite films green synthesis; ZnO NPs; biopolymer; active packaging; antimicrobial activity; composite films
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MDPI and ACS Style

Kumar, S.; Mudai, A.; Roy, B.; Basumatary, I.B.; Mukherjee, A.; Dutta, J. Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging. Foods 2020, 9, 1143. https://doi.org/10.3390/foods9091143

AMA Style

Kumar S, Mudai A, Roy B, Basumatary IB, Mukherjee A, Dutta J. Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging. Foods. 2020; 9(9):1143. https://doi.org/10.3390/foods9091143

Chicago/Turabian Style

Kumar, Santosh, Abhinab Mudai, Barnali Roy, Indra B. Basumatary, Avik Mukherjee, and Joydeep Dutta. 2020. "Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging" Foods 9, no. 9: 1143. https://doi.org/10.3390/foods9091143

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