N,N',N'',N'''-tetraacetylchitotetraose + O2 = N,N',N'',N'''-tetraacetylchitotetraono-1,5-lactone + H2O2
n,n',n'',n'''-tetraacetylchitotetraose + o2 = n,n',n'',n'''-tetraacetylchitotetraono-1,5-lactone + h2o2
N,N',N'',N'''-tetraacetylchitotetraose + O2 = N,N',N'',N'''-tetraacetylchitotetraono-1,5-lactone + H2O2
n,n',n'',n'''-tetraacetylchitotetraose + o2 = n,n',n'',n'''-tetraacetylchitotetraono-1,5-lactone + h2o2