D-cellobiose + O2 = D-cellobiono-1,5-lactone + H2O2
d-cellobiose + o2 = d-cellobiono-1,5-lactone + h2o2
D-cellobiose + O2 = D-cellobiono-1,5-lactone + H2O2
d-cellobiose + o2 = d-cellobiono-1,5-lactone + h2o2