salicylaldehyde + O2 + H2O <=> salicylate + H2O2 + H(+)
salicylaldehyde + o2 + h2o <=> salicylate + h2o2 + h(+)
salicylaldehyde + O2 + H2O <=> salicylate + H2O2 + H(+)
salicylaldehyde + o2 + h2o <=> salicylate + h2o2 + h(+)