Application of Polymer Materials in the Food Packaging

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (15 October 2023) | Viewed by 3692

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Guest Editor
Faculty of Technology and Technical Sciences, St. Clement of Ohrid University of Bitola, Dimitar Vlahov, 1400 Veles, North Macedonia
Interests: polymers; nanocomposites; composite materials; biopolymers; edible films and coatings; sustainable food systems; food contact materials; utilization of biowaste

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1. CEO/Founder, CSI: Create. Solve. Innovate. LLC., Blacksburg, VA, USA
2. MD Inspired, LLC., Blacksburg, VA, USA
Interests: polymer blends; polymer composites; thin films and coatings; healthy diets; traditional diets; sustainable diets

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Guest Editor
Research Fellow, National Institute of Food Technology Entrepreneurship and Management, New Delhi, India
Interests: edible packaging; edible films; coating; postharvest management; antioxidant extraction; waste management; biopolymers; material science; food technology; biotechnology

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Guest Editor
Postharvest Research Laboratory, Department of Botany and Plant Biotechnology, University of Johannesburg, Auckland Park, P.O. Box 524, Johannesburg 2006, South Africa
Interests: plant foods; food preservation; nutraceuticals; biological activities; phytochemicals; antioxidants; nano-agriculture
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Special Issue Information

Dear Colleagues,

Food packaging, which plays a crucial role in the food industry, is in fact very complex in nature. In addition to meeting strict food regulations, the new packaging materials should also respond to increased food production demands, globalisation, and the lifestyles changes, in addition to satisfying the increased consumers’ awareness and requirements mainly directed toward packaging’ sustainability and its impact on the environment. The packaging materials, in general, should preserve the quality of the packaged food by providing the needed micro-environment and protect it from physical damage, (UV) light, microbial contamination and other impurities, air (oxygen), and water vapor transpiration. Preserving the quality and potentially extending the shelf life of the packaged food could result in less food waste and more food for everyone on the planet.

In the past few decades, the food packaging trends have been focused to adding variety of novel functions to the traditional packaging materials, such as active packaging, intelligent packaging, and edible and bio-derived packaging. Antimicrobial, antioxidant, and other functionalities have been added to the packaging providing health benefits to the consumers. The “smart” interaction features added to the packaging material further facilitate or monitor the interaction between the packaged food and its surroundings. Moreover, the increased awareness for the future of the planet has forced the development teams to focus on sourcing sustainable raw ingredients for packaging applications and develop re-usable and recyclable packaging materials and designs.

A number of studies in recent decades have shown that modified traditional polymers are very promising materials for a variety of food categories; they can suit the novel sustainable trends by making them recyclable, biodegradable, reusable, or play a part in the circular economy systems. In addition, novel biodegradable and bio-based materials are thoroughly investigated all over the world in terms of their properties and cost reduction as alternatives to traditional polymers; at the same time, they act as high-performance multifunctional and sustainable materials.

Dr. Anka Trajkovska Petkoska
Dr. Anita Trajkovska-Broach
Dr. Nishant Kumar
Prof. Dr. Olaniyi Amos Fawole
Guest Editors

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Keywords

  • novel polymers for food packaging, food contact polymeric materials
  • polymer (nano)composites
  • biopolymers
  • active polymer packaging
  • polymer films and coatings
  • edible polymer packaging

Published Papers (2 papers)

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10 pages, 2103 KiB  
Article
Tensile and Surface Wettability Properties of the Solvent Cast Cellulose Fatty Acid Ester Films
by Heikko Kallakas, Tanuj Kattamanchi, Catherine Kilumets, Elvira Tarasova, Illia Krasnou, Natalja Savest, Iman Ahmadian, Jaan Kers and Andres Krumme
Polymers 2023, 15(12), 2677; https://doi.org/10.3390/polym15122677 - 14 Jun 2023
Cited by 1 | Viewed by 1413
Abstract
Thermoplastic cellulose esters are promising materials for bioplastic packaging. For that usage, it is important to understand their mechanical and surface wettability properties. In this study, a series of cellulose esters are prepared, such as laurate, myristate, palmitate, and stearate. The aim of [...] Read more.
Thermoplastic cellulose esters are promising materials for bioplastic packaging. For that usage, it is important to understand their mechanical and surface wettability properties. In this study, a series of cellulose esters are prepared, such as laurate, myristate, palmitate, and stearate. The aim of the study is to investigate the tensile and surface wettability properties of the synthesized cellulose fatty acid esters to understand their suitability as a bioplastic packaging material. Cellulose fatty acid esters are first synthesized from microcrystalline cellulose (MCC), then dissolved in pyridine solution, and after the solvent cast into thin films. The cellulose fatty acid ester acylation process is characterized by the FTIR method. Cellulose esters hydrophobicity is evaluated with contact angle measurements. The mechanical properties of the films are tested with the tensile test. For all the synthesized films, FTIR provides clear evidence of acylation by showing the presence of characteristic peaks. Films’ mechanical properties are comparable to those of generally used plastics such as LDPE and HDPE. Furthermore, it appears that with an increase in the side-chain length, the water barrier properties showed improvement. These results show that they could potentially be suitable materials for films and packaging materials. Full article
(This article belongs to the Special Issue Application of Polymer Materials in the Food Packaging)
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13 pages, 2123 KiB  
Article
Characterization of Synthetic Polymer Coated with Biopolymer Layer with Natural Orange Peel Extract Aimed for Food Packaging
by Domagoj Gabrić, Mia Kurek, Mario Ščetar, Mladen Brnčić and Kata Galić
Polymers 2023, 15(11), 2569; https://doi.org/10.3390/polym15112569 - 02 Jun 2023
Cited by 1 | Viewed by 1633
Abstract
This research was aimed to make biolayer coatings enriched with orange peel essential oil (OPEO) on synthetic laminate, oriented poly(ethylene-terephthalate)/polypropylene (PET-O/PP). Coating materials were taken from biobased and renewable waste sources, and the developed formulation was targeted for food packaging. The developed materials [...] Read more.
This research was aimed to make biolayer coatings enriched with orange peel essential oil (OPEO) on synthetic laminate, oriented poly(ethylene-terephthalate)/polypropylene (PET-O/PP). Coating materials were taken from biobased and renewable waste sources, and the developed formulation was targeted for food packaging. The developed materials were characterized for their barrier (O2, CO2, and water vapour), optical (colour, opacity), surface (inventory of peaks by FTIR), and antimicrobial activity. Furthermore, the overall migration from a base layer (PET-O/PP) in an acetic acid (3% HAc) and ethanol aqueous solution (20% EtOH) were measured. The antimicrobial activity of chitosan (Chi)-coated films was assessed against Escherichia coli. Permeation of the uncoated samples (base layer, PET-O/PP) increased with the temperature increase (from 20 °C to 40 °C and 60 °C). Films with Chi-coatings were a better barrier to gases than the control (PET-O/PP) measured at 20 °C. The addition of 1% (w/v) OPEO to the Chi-coating layer showed a permeance decrease of 67% for CO2 and 48% for O2. The overall migrations from PET-O/PP in 3% HAc and 20% EtOH were 1.8 and 2.3 mg/dm2, respectively. Analysis of spectral bands did not indicate any surface structural changes after exposure to food simulants. Water vapour transmission rate values were increased for Chi-coated samples compared to the control. The total colour difference showed a slight colour change for all coated samples (ΔE > 2). No significant changes in light transmission at 600 nm for samples containing 1% and 2% OLEO were observed. The addition of 4% (w/v) OPEO was not enough to obtain a bacteriostatic effect, so future research is needed. Full article
(This article belongs to the Special Issue Application of Polymer Materials in the Food Packaging)
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