Home About Browse Search
Svenska


Nanostructural Morphology of Plasticized Wheat Gluten and Modified Potato Starch Composites: Relationship to Mechanical and Barrier Properties

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
[Journal article]

[img]
Preview
PDF - Accepted Version
1MB

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/Journal:Biomacromolecules (1526-4602)
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
ISSN:1526-4602
Language:English
Publication Type:Journal 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:
Type of IDID
Web of Science (WoS)000350841100002
DOI10.1021/bm5017496
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:11 Apr 2016 07:41

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits