Publication: Rice straw and sugarcane bagasse degradation mimicking lignocellulose decay in nature: An alternative approach to biorefinery
Issued Date
2012-12-01
Resource Type
ISSN
15131874
Other identifier(s)
2-s2.0-84874842286
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
ScienceAsia. Vol.38, No.4 (2012), 364-372
Suggested Citation
Chularat Sakdaronnarong, Woranart Jonglertjunya Rice straw and sugarcane bagasse degradation mimicking lignocellulose decay in nature: An alternative approach to biorefinery. ScienceAsia. Vol.38, No.4 (2012), 364-372. doi:10.2306/scienceasia1513-1874.2012.38.364 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/15236
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Rice straw and sugarcane bagasse degradation mimicking lignocellulose decay in nature: An alternative approach to biorefinery
Other Contributor(s)
Abstract
Rice straw (Oryza sativa) and sugarcane bagasse (Saccharum spp.) were subjected to catalytic oxidation. An oxidative cleavage of lignocellulose agro-residues was based on ferric ions and hydrogen peroxide driven by 2,5-dihydroxybenzoic acid (DHB) in weak acidic condition at room temperature. Alteration of inter- and intra-molecular bonding of cellulose and change in cellulose crystallinity which led to influence enzymatic susceptibility were investigated. By means of Fourier transform infrared spectroscopy, functional groups and chemical bonding modification in cellulosic, non-cellulosic, and lignin constituents of rice straw and sugarcane bagasse were characterized. Transformation of crystalline cellulose I α and I β forms was observed after the oxidative reaction. The catalytic oxidative reaction by the Fe 3+ /DHB/H 2 O 2 system accelerated the modification of cellulose I α to cellulose I β phase of sugarcane bagasse. However, the addition of DHB barely affected the oxidative degradation of rice straw. In addition, the crystallinity index of rice straw and sugarcane bagasse that decreased after oxidative reaction caused increases of hydrolytic enzyme accessibilities of treated samples.