Pectin impacts cellulose fibre architecture and hydrogel mechanics in the absence of calcium

Lopez-Sanchez, Patricia, Martinez-Sanz, Marta, Bonilla, Mauricio R., Wang, Dongjie, Walsh, Cherie T., Gilbert, Elliot P., Stokes, Jason R. and Gidley, Michael J. (2016) Pectin impacts cellulose fibre architecture and hydrogel mechanics in the absence of calcium. Carbohydrate Polymers, 153 236-245. doi:10.1016/j.carbpol.2016.07.113


Author Lopez-Sanchez, Patricia
Martinez-Sanz, Marta
Bonilla, Mauricio R.
Wang, Dongjie
Walsh, Cherie T.
Gilbert, Elliot P.
Stokes, Jason R.
Gidley, Michael J.
Title Pectin impacts cellulose fibre architecture and hydrogel mechanics in the absence of calcium
Journal name Carbohydrate Polymers   Check publisher's open access policy
ISSN 0144-8617
1879-1344
Publication date 2016-11-20
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.carbpol.2016.07.113
Open Access Status Not yet assessed
Volume 153
Start page 236
End page 245
Total pages 10
Place of publication Kidlington, United Kingdom
Publisher Pergamon Press
Language eng
Subject 2507 Polymers and Plastics
1605 Organic Chemistry
2505 Materials Chemistry
Abstract Pectin is a major polysaccharide in many plant cell walls and recent advances indicate that its role in wall mechanics is more important than previously thought. In this work cellulose hydrogels were synthesised in pectin solutions, as a biomimetic tool to investigate the influence of pectin on cellulose assembly and hydrogel mechanical properties. Most of the pectin (60–80%) did not interact at the molecular level with cellulose, as judged by small angle scattering techniques (SAXS and SANS). Despite the lack of strong interactions with cellulose, this pectin fraction impacted the mechanical properties of the hydrogels through poroelastic effects. The other 20–40% of pectin (containing neutral sugar sidechains) was able to interact intimately with cellulose microfibrils at the point of assembly. These results support the need to revise the role of pectin in cell wall architecture and mechanics, and; furthermore they assist the design of cellulose-based products through controlling the viscoelasticity of the fluid phase.
Keyword Bacterial cellulose
Pectin
Cell wall
Mechanics
SAXS
SANS
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID CE110001007
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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