Degradation of cellulosic and hemicellulosic substrates using a chelator-mediated Fenton reaction

被引:30
作者
Arantes, V [1 ]
Milagres, AMF [1 ]
机构
[1] FAENQUIL, Dept Biotechnol, Fac Engn Quim Lorena, BR-12600970 Lorena, SP, Brazil
关键词
non-enzymatic biodegradation; cellulose; hemicellulose; chelator; catechol; hydroxamate; Fenton reaction;
D O I
10.1002/jctb.1417
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The involvement of catechol and hydroxamate chelators, along with hydrogen peroxide and Fe3+, in the degradation of cellulosic and hemicellulosic substrates was examined with the purpose of improving our current knowledge of the non-enzymatic mechanisms involved in wood biodegradation by fungi. It could be demonstrated that a catechol chelator-mediated Fenton reaction not only clearly degraded hemicellulosic substrates but also significantly accelerated and increased the effectiveness of degradation reactions. On the other hand, when a hydroxamate chelator-mediated Fenton reaction was used, an inhibitory effect was observed. When cellulosic substrates underwent a chelator-mediated Fenton reaction, no significant difference in degradation was observed between catechol and hydroxamate chelator-mediated reactions. However, a catechol-mediated reaction did accelerate the degradation of cellulosic substrates at the beginning of reactions. In addition, it was observed that with a chelator-mediated Fenton reaction, oxidation of cellulose proceeds depolymerization. (c) 2005 Society of Chemical Industry.
引用
收藏
页码:413 / 419
页数:7
相关论文
共 32 条
[1]  
ALEN R, 2002, FOREST PRODUCTS CHEM, P58
[2]  
[Anonymous], [No title captured]
[3]   INTERLABORATORY TESTING OF METHODS FOR ASSAY OF XYLANASE ACTIVITY [J].
BAILEY, MJ ;
BIELY, P ;
POUTANEN, K .
JOURNAL OF BIOTECHNOLOGY, 1992, 23 (03) :257-270
[4]   Cell wall alterations in loblolly pine wood decayed by the white-rot fungus, Ceriporiopsis subvermispora [J].
Blanchette, RA ;
Krueger, EW ;
Haight, JE ;
Akhtar, M ;
Akin, DE .
JOURNAL OF BIOTECHNOLOGY, 1997, 53 (2-3) :203-213
[5]  
COWLING E. B., 1961, Technical Bulletin. United States Department of Agriculture, V1258
[6]  
COWLING EB, 1969, ADV CHEM SER, V95, P152
[7]  
ERIKSSON KEL, 1990, MICROBIAL ENZYMATIC, P122
[8]  
FLUORNOY DS, 1990, HOLZFORSCHUNG, V45, P383
[9]   Low molecular weight chelators and phenolic compounds isolated from wood decay fungi and their role in the fungal biodegradation of wood [J].
Goodell, B ;
Jellison, J ;
Liu, J ;
Daniel, G ;
Paszczynski, A ;
Fekete, F ;
Krishnamurthy, S ;
Jun, L ;
Xu, G .
JOURNAL OF BIOTECHNOLOGY, 1997, 53 (2-3) :133-162
[10]  
Goodell B, 1998, FOREST PRODUCTS BIOTECHNOLOGY, P235