Hydrolysis kinetics of trisaccharides consisting of glucose, galactose, and fructose residues in subcritical water

Shabnam Haghighat Khajavi, Shuji Ota, Risa Nakazawa, Yukitaka Kimura, Shuji Adachi

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The hydrolysis kinetics of trisaccharides consisting of glucose, galactose, and fructose residues with different glycosidic bonds, 1-kestose, D-melezitose, D-raffinose, and lactosucrose, in subcritical water were conducted over the temperature range of 150-230 °C and at a constant pressure of 10 MPa. The hydrolysis of trisaccharides in subcritical water proceeded consecutively, i.e., one cleavage of the two bonds antedated the other. The preceding cleavage was not expressed by the first-order kinetics, but by the kinetics considering the concentration of the acidic compounds, which were produced by the degradation of the constituent monosaccharides. The hydrolysis of the constituent disaccharides, except sucrose composed of the α-Glc-(1→2)-β-Fru bond, obeyed first-order kinetics. All of the rate constants of the hydrolytic kinetics were determined, and the values were found to depend on the type of bond.

Original languageEnglish
Pages (from-to)1321-1326
Number of pages6
JournalBiotechnology Progress
Volume22
Issue number5
DOIs
Publication statusPublished - Sep 1 2006
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology

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