Title
Oxidation and degradation of native wheat starch by acidic bromate in water at room temperature Oxidation and degradation of native wheat starch by acidic bromate in water at room temperature
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Subject
Chemistry
Source (journal)
Carbohydrate polymers
Source (book)
2nd International Polysaccharide Conference on Polysaccharides as Source of Advanced and Sustainable Products (EPNOE), AUG 29-SEP 02, 2011, Wageningen, NETHERLANDS
Volume/pages
93(2013) :1 , p. 73-80
ISSN
0144-8617
ISI
000316512900011
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Native wheat starch was oxidized by benign acidic bromate in water at room temperature. HPLC-ELSD study indicated that starch degraded in the course of oxidation but it still had a polymeric structure characterized by H-1, C-13, HSQC and HMBC NMR measurements. Products were generally water-soluble fragments but the use of a short reaction time and dilute reaction mixture yielded water-insoluble products. Titration of the products showed, that the increase of the starch content and reaction time increased the content of carbonyl and carboxyl groups in the range of 0.5-2.5% and 1.7-17.2%, respectively, in the product fragments. A mechanism for the oxidation reaction was proposed. (C) 2012 Elsevier Ltd. All rights reserved.
E-info
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