Pérez Prior, María TeresaGomez-Bombarelli, RafaelGonzález-Sánchez, M.I.Valero, E.2021-02-082021-02-082012-11-30Journal of hazardous materials, Vol. 241-242, Nov. 2012, Pp. 207-2150304-38941873-3336 (online)https://hdl.handle.net/10016/31880In the present work, 13 p-substituted phenols with different functional groups have been systematically evaluated as metHb substrates by means of HPLC analysis. Non-hyperbolic kinetics were observed and Hill coefficients in the 0.37&-1.00 range were obtained. The catalytic constants and the Hill coefficients were found to be quantitatively correlated with two independent variables: the energy level of the highest-occupied molecular orbital (EHOMO), which describes the intrinsic redox activity of the substrates and the pKa-values, which are related to substrate ionization. Oxygen evolution in the presence of each phenol derivative was also measured, and good correlation between peroxidase-like and catalase-like activities of the protein was observed. It is also shown that bovine metHb, although less active than other peroxidases, may represent a good alternative from an economical point of view for phenol removal processes. The equations here obtained may serve as a basis to further explore the potential use of metHb-mediated reactions in the treatment of phenols in wastewaters and to predict which phenol will be removed most efficiently under this treatment with satisfactory reliability.9eng© 2012 Elsevier B.V. All rights reserved.Atribución-NoComercial-SinDerivadas 3.0 EspañaHemoglobinQSARPhenolic compoundsPeroxidase-like activityCatalase-like activityresearch articleMaterialeshttps://doi.org/10.1016/j.jhazmat.2012.09.028open access207215JOURNAL OF HAZARDOUS MATERIALS241-242AR/0000026979