N-(1-deoxy-beta-D-fructopyranos-1-yl)-L-leucine + O2 + H2O <=> 2-dehydro-D-glucose + L-leucine + H2O2
n-(1-deoxy-beta-d-fructopyranos-1-yl)-l-leucine + o2 + h2o <=> 2-dehydro-d-glucose + l-leucine + h2o2