Kinetics of maltooligosaccharide hydrolysis in subcritical water

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

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


The kinetics of the hydrolysis of maltooligosaccharides with a degree of polymerization (DP) of 3-6 in subcritical water was studied using a tubular reactor at temperatures between 200 and 260°C and at a constant pressure of 10 MPa. The maltooligosaccharide disappearance and product formation at residence times shorter than 50 s could be expressed by first-order kinetics. The rate constants for the hydrolysis of each maltooligosaccharide were evaluated. There was a tendency that the exo-site glucosidic bond was hydrolyzed faster than the endo-site one irrespective of the DP of the maltooligosaccharide. The hydrolysis of the maltooligosaccharides was consecutively preceded, and the time dependence of the hydrolysis for maltooligosaccharides with different DPs could be calculated by simultaneously solving the mass balance equations for all the possible saccharides.

Original languageEnglish
Pages (from-to)3663-3667
Number of pages5
JournalJournal of agricultural and food chemistry
Issue number10
Publication statusPublished - May 17 2006
Externally publishedYes


  • Exo and endo sites of glucosidic bond
  • Maltooligosaccharide
  • Site-dependent hydrolysis
  • Subcritical water

ASJC Scopus subject areas

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)


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