keto-L-sorbose + O2 => 5-dehydro-D-fructose + H2O2
keto-l-sorbose + o2 => 5-dehydro-d-fructose + h2o2
keto-L-sorbose + O2 => 5-dehydro-D-fructose + H2O2
keto-l-sorbose + o2 => 5-dehydro-d-fructose + h2o2