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Titolo:
Arabinoxylan fractionation on DEAE-cellulose chromatography influenced by protease pre-treatment
Autore:
Nilsson, M; Andersson, R; Aman, P;
Indirizzi:
Swedish Univ Agr Sci, Dept Food Sci, S-75007 Uppsala, Sweden Swedish Univ Agr Sci Uppsala Sweden S-75007 Sci, S-75007 Uppsala, Sweden
Titolo Testata:
CARBOHYDRATE POLYMERS
fascicolo: 4, volume: 39, anno: 1999,
pagine: 321 - 326
SICI:
0144-8617(199908)39:4<321:AFODCI>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
WHEAT-FLOUR; RYE GRAIN; WATER; POLYSACCHARIDES; PENTOSANS; GLUTEN;
Keywords:
rye; arabinoxylan; protease; DEAE; H-1 NMR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Nilsson, M Swedish Univ Agr Sci, Dept Food Sci, POB 7051, S-75007 Uppsala,Sweden Swedish Univ Agr Sci POB 7051 Uppsala Sweden S-75007 a, Sweden
Citazione:
M. Nilsson et al., "Arabinoxylan fractionation on DEAE-cellulose chromatography influenced by protease pre-treatment", CARBOHY POL, 39(4), 1999, pp. 321-326

Abstract

An arabinoxylan mixture was extracted with saturated barium hydroxide froma water unextractable residue of rye bran. The mixture was fractionated onan anion exchange column which was eluted with water, 0.0025 M sodium berate, 0.025 M sodium berate and 0.4 M sodium hydroxide. It was possible to fractionate the arabinoxylan mixture into fractions with different structuralfeatures. The fractionation was repeated with prior protease treatment of the arabinoxylan mixture, but most of the arabinoxylan did not bind to the column by any mechanism that the protease treatment affected, As the largest fraction was still eluted with 0.4 M sodium hydroxide. Protease treatmentaffected the proportion of disubstituted xylose residues (dXyl) in the water, 0.0025 M sodium berate and 0.025 M sodium berate fractions, indicating that protein associated with arabinoxylans with a high dXyl content is moreliable to the protease treatment or that protein is mainly associated withthese structures. This study gives indications that protein is involved inthe separation mechanism of rye arabinoxylan on a DEAE-cellulose column. (C) 1999 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 00:49:00