Thermo-responsive behavior of glycerol-plasticized oleogels stabilized by zein
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A series of zein-stabilized oleogels were prepared and plasticized by the addition of glycerol. The rheological and microstructural properties of oleogels were studied as a function of glycerol and zein concentration. The plasticized zein oleogel was best characterized as gels with a weak-link regime. The fractal dimension calculation as an indication of structure density indicated that oleogels at low glycerol content had a loose protein network that became denser with further addition of glycerol. Increasing zein concentration formed a denser oleogel network. The oleogels showed a thermo-responsive rheological property in the range of 25–100 °C that was reversible based on glycerol/zein ratios. The transition from solid-like to liquid-like behavior of oleogels by heating started from 75 °C, where G′ could drop up to two orders of magnitude. Besides, the structural analysis did not show any indication of protein secondary structural denaturation during heating.
Originalsprog | Engelsk |
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Artikelnummer | 108582 |
Tidsskrift | Food Hydrocolloids |
Vol/bind | 139 |
Antal sider | 12 |
ISSN | 0268-005X |
DOI | |
Status | Udgivet - 2023 |
Bibliografisk note
Funding Information:
This project has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No 801199 .
Publisher Copyright:
© 2023 The Authors
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