However, exceptions for these and some white-rot fungi suggest that H 2O 2 may originate from sources other than glucose in wood.īrown-rot fungi produced sufficient H 2O 2 in 3 days, and the acidic conditions optimal for cellulolysis by an H 2O 2-Fe ++ system, to account for the depolymerization observed in this study.

At these weight losses, white-rot fungi raised the degree of polymerization or depolymerized cellulose slightly and either raised pH of wood or lowered it but a little.Ībility to produce H 2O 2 from glucose in culture was generally correlated well with ability to produce H 2O 2 in wood for brown-rot fungi. Most brown-rot fungi depolymerized wood cellulose extensively at low weight losses and lowered the pH of wood. Most basidiomycetes which cause brown-rot of wood produced H 2O 2 more rapidly on loblolly pine than sweetgum and they produced H 2O 2 more quickly than white-rot fungi which varied considerably among themselves in formation of the oxidant. Wood-decay fungi produced H 2O 2 solely from native substrates in wood.

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