Home | My Profile | Contact Us
Research Trends Products  |   order gateway  |   author gateway  |   editor gateway  
Register | Forgot Password

Author Resources
 Author Gateway
 Article submission guidelines

Editor Resources
 Editor/Referee Gateway

 Regional Subscription Agents/Distributors
Trends in Organic Chemistry   Volumes    Volume 23 
Alkaline-catalyzed reactions of cellobiose - Part 3: Kinetic considerations
Amir Houshang Adibi Larijani, Raimo Alén
Pages: 63 - 72
Number of pages: 10
Trends in Organic Chemistry
Volume 23 

Copyright © 2022 Research Trends. All rights reserved

The alkaline degradation of cellobiose (4-O-β-D-glucopyranosyl-D-glucopyranose) results in non-oxidized products, like lactic acid, α- and β-glucoisosaccharinic acids, and glucose together with oxidized products, like glycolic acid, glyceric acid, 3,4-dihydroxybutanoic, and 3-deoxy-erythro/threo-pentonic acids. In this study, based on our earlier results on the formation of these main products at varying pressures (1, 5, and 10 bar) and temperatures (20, 35, and 50 °C), kinetic considerations for their formation were made. The degradation of cellobiose followed the first order decay under nitrogen atmosphere and could be approximated by pseudo-first order decay kinetics under oxygen atmosphere. The kinetic calculations revealed that at 20 oC the degradation of cellobiose proceeded about three times slower in 1 bar air than in 1 bar nitrogen. Furthermore, the activation energy for cellobiose degradation in 1 bar nitrogen was 79 kJ/mol and increased to 122 kJ/mol in 1 bar air. Under other conditions investigated the activation energy was about 100 kJ/mol. Reaction rates (h-1) for the degradation of cellobiose under nitrogen atmosphere at 20, 35, and 50 oC were 0.059−0.070, 0.267−0.289, and 1.429−2.464, respectively, whereas the corresponding values under oxygen atmosphere were 0.017−0.031, 0.207−0.234, and 1.369−1.523.
Buy this Article


Buy this article
Buy this volume
Subscribe to this title
Shopping Cart

Quick Links
Search Products
Browse in Alphabetical Order : Journals
Browse by Subject Classification : Journals

Ordering Information Ordering Information
Downloadable forms Downloadable Forms