Protein network structure and properties of wheat gluten extrudates using a novel solvent-free approach with urea as a combined denaturant and plasticiser

Türe, Hasan; Gällstedt, Mikael; Kuktaite, Ramune; Johansson, Eva; Hedenqvist, Mikael S.

doi:10.1039/c1sm05830d

Cited by 35 publications

(56 citation statements)

References 38 publications

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“…The improvement in mechanical properties for glutenin and WG with the addition of NH 4 OH-SA was less as compared to the improvements observed in gliadin based films. The tensile strength and E-modulus for WG films in this study fell in the range of those recorded by Türe et al [8] where urea was used as a combined denaturant and plasticizer. However, the E-modulus for compression molded WG films with NH 4 OH-SA were found lower compared to extruded WG films with same additive studied by Ullsten et al [21].…”

Section: Effect Of Additives On Mechanical and Solubility Properties supporting

confidence: 78%

“…Kuktaite et al [20] reported an increase in ␤-sheet content of extruded WG films with NH 4 OH-SA compared to extruded WG films without NH 4 OH-SA. An increase in ␤-sheet content has also been reported for extruded WG films where urea was used [8].…”

Section: Changes In Protein Secondary Structure and Morphology Of Glumentioning

confidence: 63%

“…Our results showed that the use of additives (NH 4 OH and SA), significantly increased the tensile strength and stiffness (E-modulus) of the materials. The changes in mechanical properties of gliadin films with the addition of additives are related to protein network development, induced by changes in the degree of polymerization and crosslinking reactions [8,19]. Due to variation in film thickness, preparation process and different conditions of mechanical testing (specimen sizes, crosshead speed, etc.)…”

Section: Mechanical Changes In Gliadin Films With the Addition Of Addmentioning

confidence: 99%

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Macromolecular changes and nano-structural arrangements in gliadin and glutenin films upon chemical modification

Rasheed

Newson

Plivelic

et al. 2015

International Journal of Biological Macromolecules

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Section: Effect Of Additives On Mechanical and Solubility Properties supporting

confidence: 78%

Section: Changes In Protein Secondary Structure and Morphology Of Glumentioning

confidence: 63%

Section: Mechanical Changes In Gliadin Films With the Addition Of Addmentioning

confidence: 99%

See 1 more Smart Citation

Macromolecular changes and nano-structural arrangements in gliadin and glutenin films upon chemical modification

Rasheed

Newson

Plivelic

et al. 2015

International Journal of Biological Macromolecules

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“…31,32,34 Unless specifically mentioned, the term WG hereinafter refers to WG mixed with glycerol. The AH contents were 3, 5 and 10 %, all with 1.5 % of salicylic acid 30,31 (% refers to the total weight (WG + glycerol + AH/SA)) and the urea contents were 10, 15 and 20 % (% refers to the total weight (WG + glycerol + urea)).…”

Section: Materials and Sample Preparationmentioning

confidence: 99%

“…33 In this work, we have combined in-situ small and wide angle x-ray scattering (SAXS/WAXS) techniques with tensile testing to monitor the WG structural changes on a molecular level at different moisture contents. Extruded glycerol-plasticized WG films, prepared by the addition of ammonium hydroxide/salicylic acid and urea, were selected since they have shown interesting processability, mechanical properties and material structures, as well as their potential for commercial exploitation 32,34 .…”

Section: Introductionmentioning

confidence: 99%

Structural Changes of Gluten/Glycerol Plastics under Dry and Moist Conditions and during Tensile Tests

Chen

et al. 2016

ACS Sustainable Chem. Eng.

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Development of bioplastics based on agricultural side‐stream products: Film extrusion of Crambe abyssinica/wheat gluten blends for packaging purposes

Rasel¹,

Johansson²,

Gällstedt³

et al. 2015

J of Applied Polymer Sci

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The purpose of this work was to add economic value to crambe meal, the protein‐rich byproduct from the industrial extraction of Crambe abyssinica seed oil, by using it as a potential feedstock for oilseed meal‐based plastics. The feasibility to produce continuous, flexible plastic films of glycerol‐plasticized crambe meal blended with wheat gluten (WG) to improve extrudate properties and urea as a protein denaturant using extrusion was investigated. The effect of process parameters and blend composition were studied with regard to the extrusion performance and the film properties. Tensile properties and oxygen permeability were determined, and the film morphology was analyzed with scanning electron microscopy. A die temperature between 125 and 130°C resulted in films with the most homogeneous surfaces and highest tensile strength and extensibility. The use of compression molding after extrusion improved the surface quality and film strength and lowered the oxygen permeability. A decrease in the plasticizer content (from 30 to 20 wt %) improved the extrudability and showed the highest tensile strength, whereas the extensibility was essentially unaffected. The importance of the presence of WG was shown by the fact that strength and extensibility decreased when the crambe content was increased from 60 to 80 wt %. It was shown that crambe‐based biopolymer blends could be extruded as continuous flexible plastic films that exhibited promising mechanical and oxygen barrier properties. The operational window was, however, found to be narrow. The results provide a first basis to further develop the process and the blend toward industrial applications, for example, as packaging materials. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42442.

show abstract

Protein network structure and properties of wheat gluten extrudates using a novel solvent-free approach with urea as a combined denaturant and plasticiser

Cited by 35 publications

References 38 publications

Macromolecular changes and nano-structural arrangements in gliadin and glutenin films upon chemical modification

Macromolecular changes and nano-structural arrangements in gliadin and glutenin films upon chemical modification

Structural Changes of Gluten/Glycerol Plastics under Dry and Moist Conditions and during Tensile Tests

Development of bioplastics based on agricultural side‐stream products: Film extrusion of Crambe abyssinica/wheat gluten blends for packaging purposes

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