Muneer, Faraz and Andersson, Mariette and Koch, Kristine and Menzel, Carolin and Hedenqvist, Mikael S. and Gällstedt, Mikael and Plivelic, Tomás S and Kuktaite, Ramune
(2015).
Nanostructural Morphology of Plasticized Wheat Gluten and Modified Potato Starch Composites: Relationship to Mechanical and Barrier Properties.
Biomacromolecules. 16
:3
, 695-705
[Research article]
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Abstract
In the present study, we were able to produce composites of wheat gluten (WG) protein and a novel genetically modified potato starch (MPS) with attractive mechanical and gas barrier properties using extrusion. Characterization of the MPS revealed an altered chain length distribution of the amylopectin fraction and slightly increased amylose content compared to wild type potato starch. WG and MPS of different ratios plasticized with either glycerol or glycerol and water were extruded at 110 and 130 degrees C. The nanomorphology of the composites showed the MPS having semicrystalline structure of a characteristic lamellar arrangement with an approximately 100 A period observed by small-angle X-ray scattering and a B-type crystal Structure observed by wide-angle X-ray scattering analysis. WG has a structure resembling the hexagonal macromolecular arrangement as reported previously in WG films. A larger amount of beta-sheets was observed in the samples 70/30 and 30/70 WG-MPS processed at 130 degrees C with 45% glycerol. Highly polymerized WG protein was found in the samples processed at 130 degrees C versus 110 degrees C. Also, greater amounts of WG protein in the blend resulted in greater extensibility (110 degrees C) and a decrease in both E-modulus and maximum stress at 110 and 130 degrees C, respectively. Under ambient conditions the WG-MPS composite (70/30) with 45% glycerol showed excellent gas barrier properties to be further explored in multilayer film packaging applications.
| Authors/Creators: | Muneer, Faraz and Andersson, Mariette and Koch, Kristine and Menzel, Carolin and Hedenqvist, Mikael S. and Gällstedt, Mikael and Plivelic, Tomás S and Kuktaite, Ramune | ||||||
|---|---|---|---|---|---|---|---|
| Title: | Nanostructural Morphology of Plasticized Wheat Gluten and Modified Potato Starch Composites: Relationship to Mechanical and Barrier Properties | ||||||
| Series Name/Journal: | Biomacromolecules | ||||||
| Year of publishing : | 2015 | ||||||
| Volume: | 16 | ||||||
| Number: | 3 | ||||||
| Page range: | 695-705 | ||||||
| Number of Pages: | 11 | ||||||
| Publisher: | ACS Publishing | ||||||
| Associated Programs and Other Stakeholders: | SLU - Research Areas for the Future > Future Agriculture (until Jan 2017) | ||||||
| ISSN: | 1526-4602 | ||||||
| Language: | English | ||||||
| Publication Type: | Research article | ||||||
| Refereed: | Yes | ||||||
| Article category: | Scientific peer reviewed | ||||||
| Version: | Accepted version | ||||||
| Full Text Status: | Public | ||||||
| Subjects: | (A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Materials Chemistry (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Biochemistry and Molecular Biology (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Plant Biotechnology | ||||||
| Keywords: | wheat gluten, modified potato starch, composites, nano-structure, tensile properties, oxygen permeability | ||||||
| URN:NBN: | urn:nbn:se:slu:epsilon-e-3002 | ||||||
| Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3002 | ||||||
| Additional ID: |
| ||||||
| ID Code: | 12632 | ||||||
| Faculty: | LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap NJ - Fakulteten för naturresurser och jordbruksvetenskap | ||||||
| Department: | (LTJ, LTV) > Department of Plant Breeding (from 130101) (NL, NJ) > Dept. of Food Science (until 161231) | ||||||
| External funders: | MISTRA | ||||||
| Deposited By: | SLUpub Connector | ||||||
| Deposited On: | 20 Oct 2015 08:44 | ||||||
| Metadata Last Modified: | 09 Sep 2020 14:17 |
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