Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System

The hydrolysis of disaccharides was conducted using a microcapillary system under hydrothermal conditions (up to 190°C at 10 MPa and pH 4–11). The hydrolysis reaction showed a sigmoidal progression with time, especially under alkaline conditions. Analysis using a kinetic model yielded the reaction i...

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Main Authors:	Toshinori Shimanouchi, Ryota Mano, Yu Yoshioka, Ayaka Fukuda, Kyung-Min Park, Yukitaka Kimura
Format:	Article
Language:	English
Published:	Hindawi Limited 2019-01-01
Series:	Journal of Chemistry
Online Access:	http://dx.doi.org/10.1155/2019/3985915

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spelling	doaj-ff25e973adb64cda8f7c8443996653162020-11-24T23:05:57ZengHindawi LimitedJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/39859153985915Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary SystemToshinori Shimanouchi0Ryota Mano1Yu Yoshioka2Ayaka Fukuda3Kyung-Min Park4Yukitaka Kimura5Graduate School of Environment and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Okayama, JapanGraduate School of Environment and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Okayama, JapanGraduate School of Environment and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Okayama, JapanGraduate School of Environment and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Okayama, JapanWonkwang University, Iskan, Republic of KoreaGraduate School of Environment and Life Science, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Okayama, JapanThe hydrolysis of disaccharides was conducted using a microcapillary system under hydrothermal conditions (up to 190°C at 10 MPa and pH 4–11). The hydrolysis reaction showed a sigmoidal progression with time, especially under alkaline conditions. Analysis using a kinetic model yielded the reaction induction period. The specific pH value (pHamb) at the induction time, which is the pH value corresponding to the progression of disaccharide hydrolysis, was peculiar to each disaccharide. Finally, the calculation of the electron density around the oxygen atom of the glycosidic bond between saccharides was found to roughly predict the pHamb value required for the progression of hydrolysis.http://dx.doi.org/10.1155/2019/3985915
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Toshinori Shimanouchi Ryota Mano Yu Yoshioka Ayaka Fukuda Kyung-Min Park Yukitaka Kimura
spellingShingle	Toshinori Shimanouchi Ryota Mano Yu Yoshioka Ayaka Fukuda Kyung-Min Park Yukitaka Kimura Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System Journal of Chemistry
author_facet	Toshinori Shimanouchi Ryota Mano Yu Yoshioka Ayaka Fukuda Kyung-Min Park Yukitaka Kimura
author_sort	Toshinori Shimanouchi
title	Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System
title_short	Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System
title_full	Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System
title_fullStr	Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System
title_full_unstemmed	Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System
title_sort	kinetic ph titration to predict the acid and hydrothermal conditions for the hydrolysis of disaccharides: use of a microcapillary system
publisher	Hindawi Limited
series	Journal of Chemistry
issn	2090-9063 2090-9071
publishDate	2019-01-01
description	The hydrolysis of disaccharides was conducted using a microcapillary system under hydrothermal conditions (up to 190°C at 10 MPa and pH 4–11). The hydrolysis reaction showed a sigmoidal progression with time, especially under alkaline conditions. Analysis using a kinetic model yielded the reaction induction period. The specific pH value (pHamb) at the induction time, which is the pH value corresponding to the progression of disaccharide hydrolysis, was peculiar to each disaccharide. Finally, the calculation of the electron density around the oxygen atom of the glycosidic bond between saccharides was found to roughly predict the pHamb value required for the progression of hydrolysis.
url	http://dx.doi.org/10.1155/2019/3985915
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Kinetic pH Titration to Predict the Acid and Hydrothermal Conditions for the Hydrolysis of Disaccharides: Use of a Microcapillary System

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