lactobiono-1,5-lactone + H2O2 => beta-lactose + O2
lactobiono-1,5-lactone + h2o2 => beta-lactose + o2
lactobiono-1,5-lactone + H2O2 => beta-lactose + O2
lactobiono-1,5-lactone + h2o2 => beta-lactose + o2