Cited by 7Nanocomposite Films for Food PackagingCollagen: Extraction and CharacterizationSilk-based biomaterials and applications

Effect of UV exposure time on the properties of films prepared from biotechnologically derived chicken gelatin

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Martinek, Jakub, Polomíková, Lucie, Kudláček, Michal, Navrátilová, Jana, Mokrejš, Pavel, Pavlačková, Jana, Gál, Robert·2025·Processes

Abstract

Biomaterials (films, foils, fibers, coatings) based on proteins are becoming increasingly important due to the growing applications for which pork and beef gelatins are used. Alternative types of gelatins (poultry or fish), which have not yet been sufficiently tested, represent a high potential. This study looks at the effect of different UV exposure times on chicken gelatin films with added glycerol. The gelatin was prepared using a unique enzymatic hydrolysis process. The quality of the UV-exposed films was compared with gelatin films not exposed to UV light. Radiation-induced crosslinking improved the mechanical and physical properties of the films. The UV crosslinked films are stabilized at a degree of swelling from 700 to 900%; moreover, they extend their dissolution to more than 7 days while maintaining their original shape. In contrast, non-crosslinked films swell and dissolve in water faster. Further, the effect of UV radiation on the water vapor permeability and color of the films was monitored. Water vapor permeability decreased by 2.5 times with increasing crosslinking time for 30% and 40% glycerol content, and the yellowness of the irradiated samples increased with exposure time in the interval from 24 to 28. Using Fourier transform infrared spectroscopy, the differences in the amount of bonding based on irradiation time were analyzed. As a result of crosslinking, the intensity of existing bonds increased. Thermal properties were verified through differential scanning calorimetry and thermogravimetric analysis. The results proved that chicken gelatin is suitable for preparing films in foods and medicine. Applying UV radiation to crosslink gelatin films is an alternative to traditionally used chemical crosslinkers.

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Research works printed but not linked: 3

  1. Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in Contact with Food (AFC) on a Request from the Commission Related to Flavouring Group Evaluation 10: Aliphatic Primary and Secondary Saturated and Unsaturated Alcohols, Aldehydes, Acetals, Carboxylic Acids and Esters Containing an Additional Oxygenated Functional Group and Lactones from Chemical Groups 9, 13 and 30 (Commission Regulation (EC) No. 1565/2000 of 18 July 2000). Available online: https://efsa.onlinelibrary.wiley.com/doi/pdf/10.2903/j.efsa.2005.246 (accessed on 13 March 2022). · DOI
  2. Xuejing, Z.; Ying, P.; Jie, L.; Kun, W.; Keyong, T. Influence of UV irradiation on the properties of goatskin collagen matrices. J. Soc. Leather Technol. Chem. 2017, 101, 66-71.
  3. Nor, M.H.M.; Nazmi, N.N.M.; Sarbon, N.M. Effects of plasticizer concentrations on functional properties of chicken skin gelatin films. Int. Food Res. J. 2017, 24, 1910-1918.

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Authors
Martinek, J., Polomíková, L., Kudláček, M., Navrátilová, J., Mokrejš, P., Pavlačková, J., & Gál, R.
Affiliations
Tomas Bata University in Zlín (CZ)
Corresponding author
Martinek, Jakub
Venue
Processes
Publisher
MDPI AG
Published
2025-01-02
Volume
13
Issue
1
Pages
91
ISSN
2227-9717 (ISSN-L)
OpenAlex
W4405985686
Cited by
7
References
48
Citations by year
2026: 7
FWCI
1.48
Type
journal article
Language
en
Open access
Locations
  • Processes (publishedVersion, cc-by)
  • Repository of TBU publications (Univerzita Tomase Bati ze Zline) (submittedVersion, cc-by)
Funders
Internal Grant Agency (IGA/FT/2024/008)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Nanocomposite Films for Food Packaging
  • Physical Sciences › Materials Science › Biomaterials › Collagen: Extraction and Characterization
  • Physical Sciences › Materials Science › Biomaterials › Silk-based biomaterials and applications
Keywords
UV crosslinking, gelatin films, enzymatic hydrolysis, glycerol, radiation crosslinking, water vapor permeability, film swelling, film dissolution, color change, thermal properties, protein-based biomaterials

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