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Chemical and Physical Interactions Between Food and Packaging: Safety, Stability, and Quality

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Food Chemistry".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 715

Special Issue Editors


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Guest Editor
Department of Food Engineering and Process Management, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
Interests: freeze-drying; coating; structure; sorption properties; osmotic dehydration; food engineering; sustainability in food production
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences, Warsaw, Poland
Interests: food engineering; drying; freeze-drying; edible films; food packaging; new food product development
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to research on physical and chemical relationships between the food packaging and the food itself. Publications submitted to this Special Issue should focus on finding optimal solutions in the field of food packaging, especially the possibility of using edible or biodegradable packaging. Determining the impact of the type of packaging and its components on the quality of food products is extremely important in the context of limiting the use of plastic food packaging. Authors should demonstrate that the research they present concerns solutions that improve the quality of food, with particular emphasis on the beneficial effect of these solutions on the final product. Consumers are increasingly aware of and interested in purchasing high-quality products, which is why we believe that the participation of leading scientists who are able to present the latest solutions is really important.

We look forward to your submissions.

Dr. Agnieszka Ciurzyńska
Dr. Monika Janowicz
Guest Editors

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 submissions that pass pre-check are 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 250 words) can be sent to the Editorial Office for assessment.

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. Molecules is an international peer-reviewed open access semimonthly 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 2700 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

  • packaging
  • coating
  • physical properites
  • chemical properties
  • food quality
  • food safety

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Published Papers (1 paper)

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Research

16 pages, 4375 KB  
Article
Influence of Storage Conditions on Physical Properties of Freeze-Dried Vegetable Snacks Packed in Pork Gelatin Films
by Agnieszka Ciurzyńska, Magdalena Karwacka, Karolina Szulc, Klaudia Wieczorek, Monika Janowicz and Sabina Galus
Molecules 2026, 31(4), 747; https://doi.org/10.3390/molecules31040747 - 22 Feb 2026
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Abstract
The aim of this study was to investigate the changes in selected physical properties of freeze-dried vegetable snacks packed in edible films based on pork gelatin of different concentrations (8 and 12%), during storage at temperatures of 4 °C and 20 °C for [...] Read more.
The aim of this study was to investigate the changes in selected physical properties of freeze-dried vegetable snacks packed in edible films based on pork gelatin of different concentrations (8 and 12%), during storage at temperatures of 4 °C and 20 °C for periods of 3 and 6 months. The scope of this work includes the preparation of freeze-dried carrot snacks, obtaining edible films, packaging the snacks, and testing selected physical properties. The results show that storage time and temperature significantly affected the quality of the freeze-dried snacks. Water activity increased from an initial value of approximately 0.12 in the control samples to values ranging between 0.27 and 0.60 after storage, depending on gelatin concentration, temperature, and storage duration. The lowest water activity values (≈0.27–0.28) were observed for samples stored at 20 °C for 3 months, regardless of gelatin concentration, whereas storage for 6 months resulted in water activity values close to 0.5–0.6. Dry matter content decreased from about 97% in the control samples to values ranging from approximately 73.6% to 87.0% for samples coated with 8% gelatin and from 78.5% to 86.7% for samples coated with 12% gelatin, with greater reductions observed at longer storage times and lower storage temperature. Mechanical analysis indicated a strengthening of product structure after 3 months of storage, followed by a marked reduction in compression force—almost tenfold—after 6 months, indicating structural weakening. Color saturation (C) increased after 3 months of storage (values around 40–42), but significantly decreased after 6 months, reaching values as low as approximately 13–24, particularly at 20 °C. Porosity remained high throughout storage, generally in the range of 94–95%, although microscopic analysis revealed progressive pore collapse after 6 months of storage. Overall, a storage temperature of 20 °C and a storage time of 3 months were identified as the most favorable conditions for freeze-dried carrot snacks packed in edible films with both 8% and 12% gelatin, ensuring lower water activity, higher dry matter content, and better structural stability. Full article
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