New features of arabinoxylan ethers revealed by using multivariate analysis
Artikel i vetenskaplig tidskrift, 2019

© 2018 Hemicelluloses are a relatively unused renewable resource. One reason is their broad structure variety that makes it hard to understand structure-property relations. In this study arbinoxylan, extracted from barley husk, was chemically modified into hydroxypropyl methyl-, hydroxypropyl- and methyl arabinoxylan. The relationship between structure and phase behavior was investigated by using multivariate analysis. The arabinoxylan ethers were characterized using mid-infrared FTIR spectroscopy and from principal components analysis, PCA, structural or physical variations between samples were visualized. With orthogonal projections to latent structures, OPLS, vibrations specific for arabinoxylan hydroxypropyl and methyl substitutions was assigned. Among the observed differences between chemical derivatives was an intensity change in the water vibration. The differences in hydration were related to clouding phase behavior of the arabinoxylan ethers. This study shows that multivariate analysis methods are useful for finding unexpected and/or hidden features in the polysaccharide structure.

FTIR

Hemicelluloses

OPLS

Methylation

Arabinoxylan

Multivariate analysis

PCA

Hydroxypropylation

Författare

Filip Nylander

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Olof Svensson

AstraZeneca AB

Mats Josefson

AstraZeneca AB

Anette Larsson

SuMo Biomaterials

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Gunnar Westman

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Carbohydrate Polymers

0144-8617 (ISSN)

Vol. 204 255-261

Skummade material för förpackningar och absorbenter baserade på skogsbiprodukter

Formas (213-2013-64), 2013-06-17 -- 2017-12-31.

Ämneskategorier

Oorganisk kemi

Materialkemi

Annan kemi

DOI

10.1016/j.carbpol.2018.09.062

Mer information

Senast uppdaterat

2020-08-18