| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Silva, Cristina L. M.
Universidade Católica Portuguesa
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2023Enhancing the safety and quality of blueberry juice by thermosonication
- 2021Inactivation kinetics of Listeria innocua in thermosonicated kiwi juice
- 2021Thermosonication applied to kiwi peel – a mild technology for quality preservation
- 2015Relationship between molecular mobility, microstructure and functional properties in chitosan/glycerol filmscitations
- 2014Molecular mobility, composition and structure analysis in glycerol plasticised chitosan filmscitations
Places of action
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article
Molecular mobility, composition and structure analysis in glycerol plasticised chitosan films
Abstract
This study was developed with the purpose to investigate the effect of polysaccharide/plasticiser concentration on the microstructure and molecular dynamics of polymeric film systems, using transmission electron microscope imaging (TEM) and nuclear magnetic resonance (NMR) techniques. Experiments were carried out in chitosan/glycerol films prepared with solutions of different composition. The films obtained after drying and equilibration were characterised in terms of composition, thickness and water activity. Results show that glycerol quantities used in film forming solutions were responsible for films composition; while polymer/total plasticiser ratio in the solution determined the thickness (and thus structure) of the films. These results were confirmed by TEM. \ allowed understanding the films molecular rearrangement. Two different behaviours for the two components analysed, water and glycerol were observed: the first is predominantly moving free in the matrix, while glycerol is mainly bounded to the chitosan chain. ; Authors Joana F. Fundo and Mafalda A.C. Quintas acknowledge Fundacao para a Ciencia e a Tecnologia (grants SFRH/BD/62176/2009 and SFRH/BPD/41715/2007, respectively), and Portuguese NMR Network.