Impact of electron beam irradiation on fish gelatin film properties

Nasreddine Benbettaïeb 1, 2 Thomas Karbowiak 2 Claire-Hélène Brachais 3 Frédéric Debeaufort 2, *
* Auteur correspondant
1 CNSTN - Centre National des Sciences et Technologies Nucléaires [Tunisie]
2 PAM - Procédés Alimentaires et Microbiologiques
3 ICMUB - Institut de Chimie Moléculaire de l'Université de Bourgogne [Dijon]
Abstract : The objective of this work was to display the effect of electron beam accelerator doses on properties of plasticized fish gelatin film. Electron spin resonance indicates free radical formation during irradiation, which might induce intermolecular cross-linking. Tensile strength for gelatin film significantly increases after irradiation (improved by 30% for 60 kGy). The vapour permeability is weakly affected by irradiation. Surface tension and its polar component increase significantly and are in accordance with the increase of wettability. So, irradiation may change the orientation of polar groups of gelatin at the film surface and crosslink the hydrophobic amino acids. No modification of the crystallinity of the film is observed. These findings suggest that if structure changes, it only occurs in the amorphous phase of the gelatin matrix. It is also observed that irradiation enhances the thermal stability of the gelatin film, by increasing the glass transition temperature and the degradation temperature.
Keywords : Radiation Mechanical and water barrier properties Electron beam irradiation Gelatin network Skin gelatin Surface hydrophobicity Biodegradation Cross linking Water-vapor permeability Mechanical-properties Gamma-irradiation Cross-linking Edible films Gluten films Protein films
Type de document :
Article dans une revue
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https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01432199
Contributeur : Pam - Université de Bourgogne <>
Soumis le : mercredi 11 janvier 2017 - 16:00:32
Dernière modification le : vendredi 24 mai 2019 - 09:50:09

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UNIV-BOURGOGNE | PAM | INC-CNRS | ICMUB | AGROSUP-DIJON | AGROSUP-PAM

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Nasreddine Benbettaïeb, Thomas Karbowiak, Claire-Hélène Brachais, Frédéric Debeaufort. Impact of electron beam irradiation on fish gelatin film properties. Food Chemistry, Elsevier, 2016, 195, pp.11 - 18. ⟨10.1016/j.foodchem.2015.03.034⟩. ⟨hal-01432199⟩

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