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Alkaline degradation kinetics and CE-separation of cello- and xylooligomers. Part I
Jürgen Sartori1, Antje Potthast, Alois Ecker
1Christian-Doppler-Laboratory, Institute of Chemistry, University of Agricultural Sciences, Muthgasse 18, A-1190, Vienna, Austria.
Abstract:
The degradation kinetics of cello- and xylooligomers under alkaline conditions has been studied, and kinetic order, kinetic rate constants as well as activation parameters (E(A), DeltaE(#), DeltaS(#)) for the different oligomers have been determined. The results were corroborated by a mathematical model of the degradation kinetics. A reliable and convenient method for the separation and simultaneous quantification of cello- and xylooligomers, based on capillary electrophoresis (CE) with pre-column derivatization, has been established. p-Aminobenzonitrile was used as the UV tag, and 550 mM borate buffer containing hexadimethrine bromide was employed as the running electrolyte.
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