Degradation by lignin

UMEZAWA AND HIGUCHI Lignin Degradation by Lignin Peroxidases 237... 

Mechanisms of Lignin Degradation by Lignin Peroxidase and Laccase of White-Rot Fungi... 

T Higuchi. Mechanisms of lignin degradation by lignin peroxidase and laccase of white-rot fungi. In NG Lewis, Paice, M.G., eds. Plant Cell Wall Polymers Biogenesis and Biodegradation. ACS Symposium Series, 1989, pp. 482-502. 

Sodium chlorite has also been used for treatment and removal of toxic and odorous gases such as hydrogen sulfide and mercaptans. Chlorine dioxide from chlorite is also useful for microbial and slime control in paper mills and alkaline paper machine systems (164,165). The use of sodium chlorite in textile bleaching and stripping is well known. Cotton is not degraded by sodium chlorite because the oxidation reactions are specific for the hemiceUulose and lignin components of the fibers. 

Aryl methyl ethers. A great deal of attention has been directed to the demethylation of aryl methyl ethers on account of interest in the degradation of lignin and related compounds by both aerobic and anaerobic organisms. 

G. D. Bending and D. J. Read, Lignin and soluble phenolic degradation by cctomy-corrhizal and ericoid fungi. Mycol. Res. /Of 1348 (1997). 

For delignified boards, a constant or at higher temperatures an increasing rate of heat release with time is interpreted as a radical initiated oxidation, maybe catalysed by some of the intermediate oxidation products - but retarded by radical scavengers formed in the degradation of lignin. 

Fourth lesson - combination of different compounds in unique macrostructure provides unique performance properties. Starch is used extensively in nature to store carbon and energy. Starch is readily digested and must be protected from degradation by a resistant coating, for example, a seed (e.g. com, wheat or rice) or a skin (e.g. potato). Woody materials such as trees, soft plants and grasses are composed of a complex combination of aliphatic and aromatic compounds (cellulose, hemicellulose and lignin). 

---