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CAPACITY OF FUNGI TO REDUCE AZO DYES (PEROXIDASES (MECHANISM (enzyme…
CAPACITY OF FUNGI TO REDUCE AZO DYES
PEROXIDASES
hemoproteins that catalyse reactions in the presence of hydrogen peroxide
TYPES
Lignin Peroxidases
Manganese peroxidases
MECHANISM
enzyme oxidation by Hydrogen Peroxide to an oxidized state during their catalytic cycle
azo dyes reduce the enzyme to its original form
azo linkage will converted into colourless aromatic amines, where decolorization occur
STRAINS
Trametes versicolor
Phanerochaete chrysosporium
PHENOLOXIDASES
can catalyse oxidation of phenolic and other aromatic compound without cofactors
TYPES
Tyrosinases
Laccases
MECHANISM
Laccases are copper containing compound that have big substrates specificity
Azo dye must be electron rich to be susceptible to oxidation by Laccases
Azo linkage converted into nitrogen gas or ammonia gas
STRAINS
Myceliophthora thermophila
Polyporus pinisitus