Lopez-Sanchez, Patricia
- University of Queensland
Sammanfattning
The interactions between heteroxylans and mixed linkage glucans determine the architecture and mechanical properties of cereal endosperm cell walls. In this work hydrogels made of cross-linked arabinoxylan with addition of p-glucan were synthesised by cryogelation as a biomimetic tool to investigate endosperm walls. Molecular and microstructural properties were characterised by nuclear magnetic resonance (C-13 NMR), scanning electron microscopy (SEM) and immunolabelling/confocal laser scanning microscopy (CLSM). The response to mechanical stress was studied by compression-relaxation experiments. The hydrogels consisted of a scaffold characterised by dense walls interconnected by macropores with both hemicelluloses co-localised and homogeneously distributed. The gels showed a high degree of elasticity reflected in their ability to resist compression without developing cracks and recover 60-80% of their original height. Our results highlight the compatibility of these hemicelluloses to coexist in confined environments such as cell walls and their potential role in determining mechanical properties in the absence of cellulose. (C) 2016 Elsevier Ltd. All rights reserved.
Nyckelord
Arabinoxylan; beta-Glucan; Gels; Compression; Microstructure; Cryogelation
Publicerad i
Carbohydrate Polymers
2016, volym: 151, sidor: 862-870
Utgivare: ELSEVIER SCI LTD
SLU författare
UKÄ forskningsämne
Polymerkemi
Publikationens identifierare
- DOI: https://doi.org/10.1016/j.carbpol.2016.06.038
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/83146