Thermo-responsive behavior of glycerol-plasticized oleogels stabilized by zein
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Thermo-responsive behavior of glycerol-plasticized oleogels stabilized by zein. / Keshanidokht, Shaghayegh; Kumar, Saket; Thulstrup, Peter Waaben; Via, Matias Alejandro; Clausen, Mathias Porsmose; Risbo, Jens.
In: Food Hydrocolloids, Vol. 139, 108582, 2023.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Thermo-responsive behavior of glycerol-plasticized oleogels stabilized by zein
AU - Keshanidokht, Shaghayegh
AU - Kumar, Saket
AU - Thulstrup, Peter Waaben
AU - Via, Matias Alejandro
AU - Clausen, Mathias Porsmose
AU - Risbo, Jens
N1 - Publisher Copyright: © 2023 The Authors
PY - 2023
Y1 - 2023
N2 - 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.
AB - 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.
KW - Emulsion-templated method
KW - Glycerol
KW - Oleogel
KW - Rheological behavior
KW - Zein
U2 - 10.1016/j.foodhyd.2023.108582
DO - 10.1016/j.foodhyd.2023.108582
M3 - Journal article
VL - 139
JO - Food Hydrocolloids
JF - Food Hydrocolloids
SN - 0268-005X
M1 - 108582
ER -
ID: 336136355