Bioresource Technology 2015-09-01

Efficient production of glucose by microwave-assisted acid hydrolysis of cellulose hydrogel.

Binzhe Sun, Lian Duan, Gege Peng, Xiaoxia Li, Aihua Xu

Index: Bioresour. Technol. 192 , 253-6, (2015)

Full Text: HTML

Abstract

To improve the production of glucose from cellulose, a simple and effective route was developed. This process uses a combination of a step of cellulose dissolution in aqueous NaOH/urea solution and then regeneration with water, followed by an acid hydrolysis step under microwave irradiation. The method is effective to obtain glucose from α-cellulose, microcrystalline cellulose, filter paper, ramie fiber and absorbent cotton. Increased with the acid concentration the glucose yield from hydrogel hydrolysis increased from 0.42% to 44.6% at 160 °C for 10 min. Moreover, the ozone treatment of cellulose in NaOH/urea solution before regeneration significantly enhanced the hydrolysis efficiency with a glucose yield of 59.1%. It is believed that the chains in cellulose hydrogel are relatively free approached, making that the acids easily access the β-glycosidic bonds.Copyright © 2015 Elsevier Ltd. All rights reserved.