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Degradation of disaccharides containing two glucose units in subcritical water
Author(s) -
Wiboonsirikul Jintana,
Nakata Keisuke,
Kobayashi Takashi,
Khuwijitjaru Pramote,
Adachi Shuji
Publication year - 2015
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.1900
Subject(s) - maltose , trehalose , hydrolysis , chemistry , isomaltose , cellobiose , chromatography , degradation (telecommunications) , organic chemistry , sucrose , telecommunications , computer science , cellulase
Disaccharides containing two glucose units, including trehalose, cellobiose, maltose, gentiobiose, and isomaltose, were hydrolyzed in a single‐component system using subcritical water at 200–240 °C and 10 MPa. A mixture of maltose and trehalose was also hydrolyzed in a binary‐component system using subcritical water at 210 and 230 °C. The fraction of the remaining disaccharides decreased as a function of the residence time and could be expressed by the Weilbull equation at any temperature. While trehalose showed the highest resistance to hydrolysis, the other disaccharides were much less resistant to hydrolysis and their reaction rates were not much different from each other. The mixture of trehalose and maltose exhibited a reduced resistance to the hydrolysis of trehalose at high hydrolysis temperatures. In addition, glucose, which was the product of the hydrolysis, can be easily subjected to further degradation to organic acids and consequently reduces the pH of the effluent. © 2015 Curtin University of Technology and John Wiley & Sons, Ltd.