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Extruded high quality materials from wheat gluten
RISE, Innventia.
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2010 (English)In: Polymers from Renewable Resources, ISSN 20412479, Vol. 1, no 4, 173-186 p.Article in journal (Refereed) Published
Abstract [en]

In this study, we report that the addition of ammonium hydroxide (NH4OH)significantly enhance the properties of extruded WG-based materials. The grainystructure disappeared and the extrudate became more uniform and glossy. Thebarrier properties improved and the oxygen permeability at dry conditions was aslow as that for a number of petroleum-based plastics (poly(ethylene terephthalateand polyamide 66). The protein structure in this material was extensivelyaggregated, which improved the strength and stiffness; there was a ca 4-foldincrease in maximum stress compared to that of the NH4OH-free samples. Theprotein solubility decreased to almost zero. Even a severe sonication treatmentin sodium dodecyl sulphate (SDS) did not increase the solubility. The only typeof protein that it was possible to extract was the ’thermo-resistant’ w-gliadinslacking disulfide-bonds. Our result provides new opportunities to develop a WGbasedfilm extrudate for potential use as e.g. a renewable barrier layer in foodand non-food laminate packagings.

Place, publisher, year, edition, pages
2010. Vol. 1, no 4, 173-186 p.
Keyword [en]
Extrusion, Plastics, Protein, Renewable, Wheat gluten
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-29532ScopusID: 2-s2.0-79955877348OAI: oai:DiVA.org:ri-29532DiVA: diva2:1095724
Note

cited By 14

Available from: 2017-05-15 Created: 2017-05-15 Last updated: 2017-05-15Bibliographically approved

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