Special Issue "Advanced biodegradable Polymers and composites for Food Packaging"

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

Deadline for manuscript submissions: 15 April 2020.

Special Issue Editors

Prof. Dr. Ilaria Cacciotti
Website
Guest Editor
Engineering Department, Niccolò Cusano University, Rome, Italy
Interests: biomaterials; bioceramics; biopolymers; biocomposites; nanomaterials; multifunctional materials; ecosustainable materials; valorization of agri-food waste extracts and by-products; natural antioxidants/antimicrobials; scaffold; spheres; fibers; coatings; sol–gel processes; electrospinning; additive manufacturing; physicochemical characterization; microstructure; thermal and mechanical properties; tissue engineering/regenerative medicine; drug delivery; food packaging
Special Issues and Collections in MDPI journals
Dr. María del Carmen Garrigós
Website
Co-Guest Editor
NANOBIOPOL Research Group, University of Alicante, San Vicente del Raspeig, 03690 Alicante, Spain
Interests: innovative biodegradable polymers; food active packaging; bio-nanocomposites; environmentally friendly additives; natural antioxidants/antimicrobials; valorization of agro-food wastes and by-products; edible films and coatings; encapsulation systems for bioactive compounds; sustainable extraction methods
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Packaging materials play a pivotal role in the worldwide market and global food packaging sales are expected to reach $411.3 billion by 2025. Commonly-employed materials consist of fossil-derived polymers, the use of which has led to dramatic environmental and ecological concerns, as they are not biodegradable. For these reasons, biopolymers have attracted a lot of interest and have been investigated, even if their industrial application is prevented by their poor mechanical, thermal and barrier properties. Thus, there is an urgent need for the formulation and development of innovative and multifunctional systems based on biopolymers (e.g. polycaprolactone, polylactide, polyhydroxyalkanoates, carbohydrates, proteins, etc.) and natural and synthetic additives, both inorganic (e.g., calcium phosphates (CaP), silica, calcium carbonate, nanoclays, etc.) and organic (e.g., agro-food byproducts, natural extracts, polyphenols, etc.), in order to provide improved performance, in terms of mechanical reinforcement, and antioxidant and antimicrobial features for potential applications in the food packaging sector.

The present Special Issue on “Advanced Biodegradable Polymers and Composites for Food Packaging” is focused on the recent progresses in the development of food packaging materials including, but not limited to, innovative biodegradable polymers, multifunctional composites, encapsulation systems, fibers, and agro-food waste-derived systems. We invite you to submit research articles or reviews on the latest research work in this sector, that emphasize and highlight applications in the food packaging sector.

Prof. Ilaria Cacciotti
Guest Editor
Prof. María Carmen Garrigós Selva
Guest Co-Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Biobased polymers
  • Biodegradable polymers
  • Bioplastics
  • Sustainable materials
  • Agro-food waste materials
  • Circular economy
  • Compostable materials
  • Ecosustainable materials
  • Life cycle assessment
  • Encapsulation systems
  • Food active packaging
  • Bio-nanocomposites
  • Edible films and coatings

Published Papers (6 papers)

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Research

Open AccessArticle
Alginate-Edible Coatings for Application on Wild Andean Blueberries (Vaccinium meridionale Swartz): Effect of the Addition of Nanofibrils Isolated from Cocoa By-Products
Polymers 2020, 12(4), 824; https://doi.org/10.3390/polym12040824 (registering DOI) - 05 Apr 2020
Abstract
Edible coatings and films are appealing strategies for the postharvest management of blueberries. In the current work, alginate and alginate/cellulose nanofibril (CNF) edible coatings crosslinked with calcium chloride were developed for application on Andean blueberry (a promissory wild blueberry). Cocoa by-products were valorized [...] Read more.
Edible coatings and films are appealing strategies for the postharvest management of blueberries. In the current work, alginate and alginate/cellulose nanofibril (CNF) edible coatings crosslinked with calcium chloride were developed for application on Andean blueberry (a promissory wild blueberry). Cocoa by-products were valorized through the isolation of their CNFs, and these were incorporated in the edible coatings. Edible coating formulations were based on blends of alginate (2% w/v), CNFs (0%, 0.1%, or 0.3%), glycerol, and water. In addition, stand-alone films were prepared, and their light and water vapor barrier properties were studied before applying the coating on the fruit surface. The results show that the addition of CNFs caused a significant decrease in the transparency and the water vapor permeability of the alginate films. After applying on the Andean blueberry fruits, the alginate and alginate/CNF coatings enhanced the appearance and the firmness of the fruits. Moreover, they significantly reduced the respiration rate and the water loss of the Andean blueberries throughout the 21 days of refrigerated storage. Alginate and alginate/CNFs coatings may be considered a useful alternative for the delay of the postharvest deterioration of Andean blueberries. Full article
(This article belongs to the Special Issue Advanced biodegradable Polymers and composites for Food Packaging)
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Open AccessArticle
Evaluation of the Suitability of Poly(Lactide)/Poly(Butylene-Adipate-co-Terephthalate) Blown Films for Chilled and Frozen Food Packaging Applications
Polymers 2020, 12(4), 804; https://doi.org/10.3390/polym12040804 (registering DOI) - 03 Apr 2020
Abstract
The use of biopolymers can reduce the environmental impact generated by plastic materials. Among biopolymers, blends made of poly(lactide) (PLA) and poly(butylene-adipate-co-terephthalate) (PBAT) prove to have adequate performances for food packaging applications. Therefore, the present work deals with the production and the characterization [...] Read more.
The use of biopolymers can reduce the environmental impact generated by plastic materials. Among biopolymers, blends made of poly(lactide) (PLA) and poly(butylene-adipate-co-terephthalate) (PBAT) prove to have adequate performances for food packaging applications. Therefore, the present work deals with the production and the characterization of blown films based on PLA and PBAT blends in a wide range of compositions, in order to evaluate their suitability as chilled and frozen food packaging materials, thus extending their range of applications. The blends were fully characterized: they showed the typical two-phase structure, with a morphology varying from fibrillar to globular in accordance with their viscosity ratio. The increase of PBAT content in the blends led to a decrease of the barrier properties to oxygen and water vapor, and to an increase of the toughness of the films. The mechanical properties of the most ductile blends were also evaluated at 4 °C and −25 °C. The decrease in temperature caused an increase of the stiffness and a decrease of the ductility of the films to a different extent, depending upon the blend composition. The blend with 40% of PLA revealed to be a good candidate for chilled food packaging applications, while the blend with a PLA content of 20% revealed to be the best composition as frozen food packaging material. Full article
(This article belongs to the Special Issue Advanced biodegradable Polymers and composites for Food Packaging)
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Open AccessArticle
The Performance Changes and Migration Behavior of PLA/Nano-TiO2 Composite Film by High-Pressure Treatment in Ethanol Solution
Polymers 2020, 12(2), 471; https://doi.org/10.3390/polym12020471 - 18 Feb 2020
Abstract
To study the relationship between performance changes and nanoparticles migration of the composite film at different migration stages, the poly (lactic acid) (PLA)/nano-TiO2 composite film treated by high pressure was immersed in 50% (v/v) ethanol solution for 45 [...] Read more.
To study the relationship between performance changes and nanoparticles migration of the composite film at different migration stages, the poly (lactic acid) (PLA)/nano-TiO2 composite film treated by high pressure was immersed in 50% (v/v) ethanol solution for 45 days at 40 °C, and the film characteristics and migration behavior were analyzed. The results showed that the migration of the composite film with the highest loading of nano-TiO2 (20 wt. %) in alcoholic food simulated solution was far less than 10 mg/kg during the 45-day migration process. Although with the increase of migration time, the micro-morphology of composite film became rougher, the crystallinity decreased and the gas permeability increased, but the internal crystal structure of the composite film remained basically unchanged. The PLA/nano-TiO2 composite films treated by high pressure treatment were relatively stable, and had good performance and migration behavior in alcoholic food simulated solution, the nanocomposite film after high pressure treatment could be used to reduce nano-TiO2 particle migration and subsequently reduce human exposure as the packaging film for the packaging of alcoholic food, which provide a theoretical basis for the applications of high pressure treatment of PLA/nano-TiO2 composite films in food packaging material and broaden its application prospects. Full article
(This article belongs to the Special Issue Advanced biodegradable Polymers and composites for Food Packaging)
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Open AccessArticle
Physical and Antioxidant Properties of Cassava Starch–Carboxymethyl Cellulose Incorporated with Quercetin and TBHQ as Active Food Packaging
Polymers 2020, 12(2), 366; https://doi.org/10.3390/polym12020366 - 07 Feb 2020
Abstract
Antioxidant integration has been advocated for in polymer films, to exert their antioxidative effects in active packaging. In this study, the new antioxidant food packaging made from cassava starch–carboxymethyl cellulose (CMC), which is biodegradable, edible and inexpensive, was developed. Their properties were determined [...] Read more.
Antioxidant integration has been advocated for in polymer films, to exert their antioxidative effects in active packaging. In this study, the new antioxidant food packaging made from cassava starch–carboxymethyl cellulose (CMC), which is biodegradable, edible and inexpensive, was developed. Their properties were determined and applied in food models for application. Antioxidants (quercetin and tertiary butylhydroquinone (TBHQ)) were added at various concentrations into cassava starch–carboxymethyl cellulose (CMC) (7:3 w/w) films containing glycerol (30 g/100 g starch–CMC) as a plasticizer. The effects of quercetin and TBHQ concentrations on the mechanical properties, solubility, antioxidative activity, and applications of the films were investigated. Addition of antioxidant improved tensile strength, but reduced elongation at break of the cassava starch–CMC film. Cassava starch–CMC films containing quercetin showed higher tensile strength, but lower elongation at break, compared to films with TBHQ. Increases in quercetin and TBHQ content decreased water solubility in the films. Both the total phenolic content and antioxidative activity (DPPH scavenging assay) still remained in films during storage time (30 days). In application, cassava starch–CMC film containing quercetin and TBHQ can retard the oxidation of lard (35–70 days) and delay the discoloration of pork. Full article
(This article belongs to the Special Issue Advanced biodegradable Polymers and composites for Food Packaging)
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Open AccessArticle
Preparation, Characterization and Application of a Low Water-Sensitive Artemisia sphaerocephala Krasch. Gum Intelligent Film Incorporated with Anionic Cellulose Nanofiber as a Reinforcing Component
Polymers 2020, 12(1), 247; https://doi.org/10.3390/polym12010247 - 20 Jan 2020
Abstract
A low-water-sensitive Artemisia sphaerocephala Krasch. gum (ASKG) based intelligent film was developed. Red cabbage extracts (RCE) was selected as a natural pH-sensitive indicator, and anionic cellulose nanofiber (ACNF) was added as a hydrophobic and locking host. The zeta potential, rheology, Fourier-transform infrared spectroscopy, [...] Read more.
A low-water-sensitive Artemisia sphaerocephala Krasch. gum (ASKG) based intelligent film was developed. Red cabbage extracts (RCE) was selected as a natural pH-sensitive indicator, and anionic cellulose nanofiber (ACNF) was added as a hydrophobic and locking host. The zeta potential, rheology, Fourier-transform infrared spectroscopy, X-ray diffractometry, and release results indicated that the RCE was locked by the ACNF via electrostatic interactions, moreover, broke the original complicated network and ordered arrangement of polymer molecules in the developed intelligent films. RCE addition decreased the tensile strength, oxygen, and water vapor barrier properties and light transmission of the developed intelligent films, while increasing the elongation at break. The films could respond to buffer solutions and NH3 through different color changes. The developed intelligent film was hydrophobic, which could precisely detect the freshwater shrimp freshness in real time via color changes, which indicated that the films have potential in intelligent packaging and gas-sensing label fields. Full article
(This article belongs to the Special Issue Advanced biodegradable Polymers and composites for Food Packaging)
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Open AccessArticle
Nanocomposite Furcellaran Films—the Influence of Nanofillers on Functional Properties of Furcellaran Films and Effect on Linseed Oil Preservation
Polymers 2019, 11(12), 2046; https://doi.org/10.3390/polym11122046 - 09 Dec 2019
Cited by 1
Abstract
Nanocomposite films that were based on furcellaran (FUR) and nanofillers (carbon quantum dots (CQDs), maghemite nanoparticles (MAN), and graphene oxide (GO)) were obtained by the casting method. The microstructure, as well as the structural, physical, mechanical, antimicrobial, and antioxidant properties of the films [...] Read more.
Nanocomposite films that were based on furcellaran (FUR) and nanofillers (carbon quantum dots (CQDs), maghemite nanoparticles (MAN), and graphene oxide (GO)) were obtained by the casting method. The microstructure, as well as the structural, physical, mechanical, antimicrobial, and antioxidant properties of the films was investigated. The incorporation of MAN and GO remarkably increased the tensile strength of furcellaran films. However, the water content, solubility, and elongation at break were significantly reduced by the addition of the nanofillers. Moreover, furcellaran films containing the nanofillers exhibited potent free radical scavenging ability. FUR films with CQDs showed an inhibitory effect on the growth of Staphylococcus aureus and Escherichia coli. The nanocomposite films were used to cover transparent glass containers to study the potential UV-blocking properties in an oil oxidation test and compare with tinted glass. The samples were irradiated for 30 min. with UV-B and then analyzed for oxidation markers (peroxide value, free fatty acids, malondialdehyde content, and degradation of carotenoids). The test showed that covering the transparent glass with MAN films was as effective in inhibiting the oxidation as the use of tinted glass, while the GO and CQDs films did not inhibit oxidation. It can be concluded that the active nanocomposite films can be used as a desirable material for food packaging. Full article
(This article belongs to the Special Issue Advanced biodegradable Polymers and composites for Food Packaging)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Physical and Antioxidant Properties of Cassava Starch-Carboxymethyl Cellulose Incorporated with Quercetin and TBHQ as Active Food Packaging

Authors: Wirongrong Tongdeesoontorn1,2, Lisa J. Mauer3, Sasitorn Wongruong4, Pensiri Sriburi5 and Pornchai Rachtanapun6*

Abstract:

The new antioxidant food packaging materials were developed and determined. Antioxidants (quercetin and tertiary butylhydroquinone (TBHQ)) were added at various concentrations into cassava starch- carboxymethyl cellulose (CMC) (7:3 w/w) films containing glycerol (30 g/100 g starch-CMC) as a plasticizer. The effects of quercetin and TBHQ concentrations on the mechanical properties, solubility, antioxidative activity, and applications of the films were investigated. Addition of antioxidant improved tensile strength but reduced elongation at break of the cassava starch-CMC film. Cassava starch-CMC films containing quercetin showed higher tensile strength but lower elongation at break than the films with TBHQ. Increases of quercetin and TBHQ contents decreased water solubility in the films. Both the total phenolic content and antioxidative activity (DPPH scavenging assay) still remained in films during storage time (30 days). For the applications, cassava starch-CMC film containing quercetin and TBHQ can retard the oxidation of lard (35-70 days) and delay the discoloration of pork.

Title: Nanocomposite furcellaran films - the influence of nanofillers on functional properties of furcellaran films and effect on linseed oil preservation

Author: Ewelina Jamróz1, Pavel Kopel2,3*, Joanna Tkaczewska4, Dani Dordevic5,6, Simona Jancikova5, Piotr Kulawik4, Vedran Milosavljevic7,8, Kristyna Dolezelikova7,8, Kristyna Smerkova7,8, Pavel Svec7 and Vojtech Adam7,8

Abstact: Nanocomposite films based on furcellaran (FUR) and nanofillers (carbon quantum dots (CQDs), maghemite nanoparticles (MAN) and graphene oxide (GO)) were obtained by casting method. The microstructure as well as structural, physical, mechanical, antimicrobial and antioxidant properties of the films were investigated. The incorporation of MAN and GO remarkably increased the tensile strength of furcellaran films. However, the water content, solubility and elongation at break were significantly reduced by the addition of the nanofillers. Moreover, furcellaran films containing the nanofillers exhibited potent free radical scavenging ability. FUR films with CQDs showed an inhibitory effect on the growth of Staphylococcus aureus and Escherichia coli. The nanocomposite films were used to cover transparent glass containers to study potential UV-blocking properties in an oil oxidation test and compared with tinted glass. The samples were irradiated for 30 min with UV-B and analyzed for oxidation markers (peroxide value, free fatty acids, malondialdehyde content and degradation of carotenoids). The test showed that covering the transparent glass with MAN films was as effective in inhibiting the oxidation as the use of tinted glass, while GO and CQDs films did not inhibit oxidation. It can be concluded that the active nanocomposite films can be used as a desirable material for food packaging.

Title: Antioxidation, Antibacterial and Edible Coating Based on Whey Protein Isolate Nanofibrils with Carvacrol for Preserving Cheddar Cheese

Authors: Qiannan Wang 1,†, Chunhong Liu 1,†, Hongliang Yu 1, Bo tian 2, Bin Jiang 1, Dongmei Li 1, Zhibiao Feng 1, *

Abstract:

The performance of edible coating is influenced by the properties of coating materials. Whey protein nanofibrils (WPNFs) can be used as edible coatings for its high hydrophobicity and antioxidant activity. The aim of the present study was to prepare and characterize an antioxidation, antibacterial and edible coating and to evaluate its use for preserving Cheddar cheese. The edible coatings were based on whey protein isolate nanofibrils (WPNFs) with carvacrol (CA) as antimicrobial and glycerol (Gly) as plasticizer. The prepared WPNFs and edible coatings (ECs) emulsions were evaluated using TEM. Furthermore, the antioxidant and antibacterial activity ECs emulsions and the physical properties of edible films such as microscopy, thickness, transparency and moisture content were evaluated. The impacts of Cheddar cheese with the prepared edible coating on weight losses and physical characteristics were assessed during storage in comparison to the uncoated cheese. The WPNFs-CA/Gly emulsions had higher antioxidant activity in both DPPH radical scavenging activity and reducing power and higher antibacterial activity. The WPNFs-CA/Gly films had smooth and continuous surfaces, best transparency and lowest moisture content. The weight loss and textural properties were significantly improved by the WPNFs-CA/Gly coating on Cheddar cheese. This study provided valuable new information about the effective coating materials.

 

 

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