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Updated: Jul 20, 2025

Sequencing of Plant Wall Heteroxylans Using Enzymic, Chemical Methylation and Physical Mass Spectrometry, Nuclear Magnetic Resonance Techniques

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Arabinoxylan in Water through SANS: Single-Chain Conformation, Chain Overlap, and Clustering.

Maike Petermann¹, Lucie Dianteill¹, Amal Zeidi¹

¹TBI, Université de Toulouse, CNRS, INRAE, INSA, 31077 Toulouse, France.

Biomacromolecules

|August 1, 2023

Summary

Wheat arabinoxylan (AX) chains in solution exhibit polymer-like behavior, forming clusters and self-avoiding chains. This study reveals AX properties at various scales, aiding its use as a sustainable material.

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Small and Wide Angle X-Ray Scattering Studies of Biological Macromolecules in Solution

Small and Wide Angle X-Ray Scattering Studies of Biological Macromolecules in Solution

Published on: January 8, 2013

Area of Science:

Biopolymer Science
Materials Science
Physical Chemistry

Background:

Arabinoxylan (AX) is a major hemicellulose in wheat.
Understanding AX solution behavior is crucial for its application as a sustainable material.
Previous studies have not comprehensively analyzed AX at multiple length scales.

Purpose of the Study:

To investigate the structure and conformational behavior of wheat arabinoxylan (AX) in aqueous solutions.
To determine key polymer parameters like persistence length and chain cross-section.
To explore the scaling behavior of AX solutions in the semidilute regime.

Main Methods:

Small-angle neutron scattering (SANS) was employed to probe AX structure.
Data analysis involved fitting to a worm-like chain model.
A dedicated modeling approach was used to extract correlation lengths.

Main Results:

AX chains in good solvent exhibit a Flory exponent of ν = 0.588.
Persistence length (lp) was determined as 45 Å, with a chain cross-section (2Rc) of 11-12 Å.
Correlation length (ξ) decay followed a scaling law, confirming self-avoiding chain behavior.

Conclusions:

Wheat arabinoxylan displays self-avoiding statistical behavior in solution.
This research provides fundamental insights into water-soluble AX properties.
Findings support AX development as a renewable alternative to fossil carbon-based molecules.