Ligninolysis And Decolorization By Enzymes

A number of white-rot fungi and/or their enzymes have been used successfully in detoxification and degradation of

Table 1 Dyes decolorized by Phanerochaete chrysosporium

Organism Dye class Dye References

Table 1 Dyes decolorized by Phanerochaete chrysosporium

Organism Dye class Dye References

P. chrysosporium BKM 1667 (ATCC 24725)

Sulfonated azo dyes

Synthesized dyes

Paszczynski et al. (1992)

P. chrysosporium OGC 101

Azo dyes

Disperse yellow 3 Disperse orange 3 Solvent yellow 14

Spadaro et al. (1993)

P. chrysosporium BKM-F-1767

Azo dyes Heterocyclic dyes

Tropabolin O Orange II Congo red Azure B

Cripps et al. (1990)

P. chrysosporium ME-446

Polymeric dyes

Poly B-441 Poly R-481 Poly Y-606

Glenn and Gold (1983)

P. chrysosporium BKM-F-1767

Triphenylmethane dyes

Crystal violet

Bumpus and Brock (1988)

P. chrysosporium BKM-1667 (ATTC 24725)

Fluorescein acid dye

Rose Bengal

Gogna et al. (1992)

selected xenobiotics. The most studied white-rot fungus is P. chrysosporium.

Most of the oxidative reactions observed are presumed to be one-electron oxidation of suitable phenolic substrates to yield phenoxy radicals. Nonphenolic substrates yield radical cationic intermediates (Kirk and Farrell 1987). The result is the formation of opened-ring products, small aromatic fragments, and quinones and these can be further metabolized.

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