The H2O2-dependent activity of a fungal lytic polysaccharide monooxygenase investigated with a turbidimetric assay.

We found for all systems that the supply of H2O2 limited LPMO's cellulose depolymerization activity, which supports the function of H2O2 as the relevant cosubstrate. The turbidimetric assay allowed rapid determination of LPMO activity on a cellulosic substrate without the need for time-consuming and instrumentally elaborate analysis methods.