Structure Analysis of Carboxymethyl Starch by Capillary Electrophoresis and Enzymic Degradation

Autor: Tüting, Wiebke, Albrecht, Gerald, Volkert, Bert, Mischnick, Petra
Zdroj: Starch / Stärke; July 2004, Vol. 56 Issue: 7 p315-321, 7p
Abstrakt: Carboxymethyl starches (CMS) with a degree of substitution (DS) in the range of 1.2 to 1.5 were analysed by capillary electrophoresis (CE) after hydrolysis and reductive amination in a borate buffer. The monomer composition determined was compared to data calculated by the statistical models of Spurlin and Reuben. In addi­tion, the starch derivatives were exhaustively degraded by α-amylase and amylo­glucosidase and the amount of glucose liberated was determined. Results were discussed with regard to derivatisation conditions and properties of the carboxymethyl starches.
Databáze: Supplemental Index