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Chitosan Materials: Recent Advances in Modification, Properties and Application

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Macromolecules".

Deadline for manuscript submissions: 31 March 2025 | Viewed by 410

Special Issue Editor


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Guest Editor
Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
Interests: biopolymers; food packaging; membrane technology; PET depolymerization and adsorbents
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Special Issue Information

Dear Colleagues,

Despite the great interest in chitosan materials and the growing number of possibilities for their application, researchers still face challenges, including improving their water solubility, increasing their mechanical strength, and reducing the variability of their quality, which is dependent on the source of chitin.

For this Special Issue, we welcome contributions focused on chitosan materials that emphasize novel findings, experimental methodologies, or innovative applications pushing the boundaries of chitosan research.  All research should focus on providing insight into the molecular structure. Studies of the physical and chemical mechanisms, modification, properties and application of chitosan materials are also welcomed. As global industries shift towards more sustainable practices and eco-friendly alternatives, the need for cutting-edge research on renewable and biodegradable materials, including chitosan, has never been more pressing. This is your opportunity to contribute to the growing body of knowledge driving technological advancements and solving real-world problems.

This Special Issue is supervised by Prof. Gabriela Dudek (Silesian University of Technology, Poland), who specializes in biopolymer materials.

Dr. Gabriela Dudek
Guest Editor

Manuscript Submission Information

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Keywords

  • chitosan materials
  • biomedical applications
  • agriculture and food industry
  • water treatment and environmental applications
  • nanotechnology and advanced materials

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Published Papers (1 paper)

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Research

25 pages, 2047 KiB  
Article
Improving Antimicrobial Properties of Biopolymer-Based Films in Food Packaging: Key Factors and Their Impact
by Sonia Wardejn, Stanisław Wacławek and Gabriela Dudek
Int. J. Mol. Sci. 2024, 25(23), 12580; https://doi.org/10.3390/ijms252312580 - 22 Nov 2024
Viewed by 319
Abstract
Biodegradable films derived from polysaccharides are increasingly considered eco-friendly alternatives to synthetic packaging in the food industry. The study’s purpose was to improve the antimicrobial properties of biopolymer-based films made from starch, chitosan, alginate, and their blends (starch/chitosan and starch/alginate) and to evaluate [...] Read more.
Biodegradable films derived from polysaccharides are increasingly considered eco-friendly alternatives to synthetic packaging in the food industry. The study’s purpose was to improve the antimicrobial properties of biopolymer-based films made from starch, chitosan, alginate, and their blends (starch/chitosan and starch/alginate) and to evaluate the effects of modifiers, i.e., plant extracts, plasticizers, cross-linking agents, and nanofillers. Films were prepared via the Solution Casting Method and modified with various plasticizers, calcium chloride, oxidized sucrose, and nanofiber cellulose (NC). Chestnut, nettle, grape, and graviola extracts were tested for antimicrobial activity against Staphylococcus epidermidis, Escherichia coli, and Candida albicans. The film’s mechanical and hydrophilic properties were studied as well. The chestnut extract showed the strongest antimicrobial properties, leading to its incorporation in all the films. The chitosan films displayed better antibacterial activity against Gram-positive than Gram-negative bacteria but were ineffective against C. albicans. NC significantly improved the mechanical and antimicrobial properties of the chitosan films. The alginate films, modified with various plasticizers cross-linked with calcium chloride, demonstrated the highest antimicrobial efficacy against E. coli. The starch films, cross-linked with oxidized sucrose, exhibited slightly lower antimicrobial resistance due to a more compact structure. Films such as ALG6 and ALG5, including plasticizers EPGOS and PGOS, respectively, indicated optimal hydrophilicity and mechanical properties and achieved the best antimicrobial performance against all the investigated microorganisms. All these findings highlight the potential of these biodegradable films for food packaging, offering enhanced antimicrobial activity that prolongs shelf life and reduces spoilage, making them promising candidates for sustainable food preservation. Full article
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