Abstract:
:The water-soluble arabinoxylans from wheat flour (high, medium, and low viscosity samples) and rye flour (high viscosity sample) were characterized by (1)H NMR spectroscopy and HPSEC with refractive index, light scattering, and viscometric detectors. These cereal arabinoxylans have recently been used as model arabinoxylans in various studies, but their solution properties have not been previously investigated. In this study, two HPSEC eluent systems were used: the water-based system and DMSO-based system. DMSO seemed to be a better solvent than water, especially for arabinoxylans containing a low amount of arabinose substituents. (1)H NMR spectroscopy indicated the structural differences between the analyzed arabinoxylan samples that also affected the hydrodynamic parameters obtained with HPSEC. Influence of arabinose side groups on the solution conformation of arabinoxylans could not be excluded based on our data, despite the role of arabinose substituents being questioned in previous investigations concerning arabinoxylan conformation in solution.
journal_name
Biomacromoleculesjournal_title
Biomacromoleculesauthors
Pitkänen L,Virkki L,Tenkanen M,Tuomainen Pdoi
10.1021/bm9003767subject
Has Abstractpub_date
2009-07-13 00:00:00pages
1962-9issue
7eissn
1525-7797issn
1526-4602journal_volume
10pub_type
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