Transport and tensile properties of compression-molded wheat gluten films

Biomacromolecules
Mikael GällstedtMikael S Hedenqvist

Abstract

Mechanical and transport properties were assessed on wheat gluten films with a glycerol content of 25-40%, prepared by compression molding for 5-15 min at temperatures between 90 and 130 degrees C. Effects of storing the films up to 24 days, in 0 and 50% relative humidity (RH), were assessed by tensile measurements. The films were analyzed with respect to methanol zero-concentration diffusivity, oxygen permeability (OP), water vapor permeability (WVP), Cobb60 and sodium dodecyl sulfate (SDS) solubility coupled with sonication. The SDS solubility and methanol diffusivity were lower at the higher molding temperature. Higher glycerol content resulted in higher OP (90-95% RH), WVP, and Cobb60 values, due to the plasticizing and hygroscopic effects. Higher glycerol contents gave a lower fracture stress, lower Young's modulus, lower fracture strain, and less strain hardening. The mold time had less effect on the mechanical properties than mold temperature and glycerol content. The fracture stress and Young's modulus increased and the fracture strain decreased with decreasing moisture content.

References

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Citations

Mar 19, 2011·Biomacromolecules·Thomas O J BlomfeldtMikael S Hedenqvist
Jun 1, 2012·Journal of Agricultural and Food Chemistry·Anna-Sophie HagerElke K Arendt
Jun 28, 2014·Journal of Agricultural and Food Chemistry·William R NewsonEva Johansson
Feb 16, 2012·ACS Applied Materials & Interfaces·Thomas O J BlomfeldtMikael S Hedenqvist
Nov 3, 2010·International Journal of Biological Macromolecules·S-W ChoM S Hedenqvist
Feb 9, 2011·Journal of the Science of Food and Agriculture·Lidia S Zárate-RamírezAntonio Guerrero
Aug 27, 2016·International Journal of Molecular Sciences·Joël ZinkMarkus Schmid
Jan 8, 2019·Critical Reviews in Food Science and Nutrition·Muhammad Zubair, Aman Ullah
Apr 10, 2019·Polymers·Jesper GustafssonAkram Zamani
Feb 23, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Faiza RasheedEva Johansson
Feb 10, 2010·Biomacromolecules·Bert LagrainJan A Delcour
Oct 10, 2006·Biomacromolecules·Rebecca M DicharryRichard S Parnas
May 28, 2010·Journal of Agricultural and Food Chemistry·Sung-Woo ChoMikael S Hedenqvist
May 9, 2006·Biomacromolecules·Idoia OlabarrietaMikael S Hedenqvist
Oct 13, 2005·Journal of Agricultural and Food Chemistry·Pilar Hernández-MuñozRafael Gavara
Jul 20, 2006·Journal of Agricultural and Food Chemistry·Justin R BaroneWalter F Schmidt
Feb 16, 2006·Journal of Agricultural and Food Chemistry·Idoia OlabarrietaMikael S Hedenqvist
Feb 13, 2007·Biomacromolecules·Xiaoqing ZhangIko M Burgar
Mar 15, 2006·Biomacromolecules·N Henrik UllstenMikael S Hedenqvist

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