Mechanisms of peroxidase oxidation of o-dianisidine, 3,3′,5,5′-tetramethylbenzidine, and o-phenylenediamine in the presence of sodium dodecyl sulfate

Involvement of ligninolytic enzymes of Phanerochaete chrysosporium in treating the textile effluent containing Astrazon Red FBL in a packed-bed bioreactor

“…Several authors have shown an improvement in enzyme excretion in the presence of certain surfactants such as Tween80 in immobilized and submerged cultures of fungi [26][27][28]. The effect of Tween80 on LiP activity during the production of the enzyme in submerged agitated cultures of P. chrysosporium has been studied and the suggestion was that the effect of the detergent has a physiological basis for instance, improvement of the cell membrane permeability [26].…”

Cyanobacterial Lactate Oxidases Serve as Essential Partners in N2 Fixation and Evolved into Photorespiratory Glycolate Oxidases in Plants

“…The affinity of No-LOX for oxygen was estimated according to the methods of Macheroux et al (1993) and Mills et al (2001) using different L-lactate concentrations (1 to 10 mM) and different enzyme amounts. Additionally, hydrogen peroxide production was measured using 3,39,5,59-tetramethylbenzidine according to Josephy et al (1982) and Kireyko et al (2006). The recombinant proteins were incubated for 5 min without (control) or 1 mM substrate in the enzyme buffer described above.…”

A Polymeric Liquid Membrane Electrode Responsive to 3,3′,5,5′-Tetramethylbenzidine Oxidation for Sensitive Peroxidase/Peroxidase Mimetic-Based Potentiometric Biosensing

“…The different stabilities of the intermediates in the presence of different ion exchangers are probably due to the fact that better steric accessibility of sulfonate group allows for stronger ion-pair interactions with positively charged species 21 and the ion-pair interactions can stabilize the cationic intermediates in aromatic amine oxidations. 22 However, potential responses of these cationic intermediates in a certain background electrolyte are also related to more factors such as other intermolecular interactions of the ion exchanger with the intermediates (e.g., π−π interaction) and the binding affinity of the ion exchanger with the background cation (i.e., Na + ). Here, TPB − as the ion exchanger of the polymeric liquid membrane electrode shows better response sensitivity toward the TMB oxidation, compared to DNNS − (see Figure S3 in the Supporting Information), which is similar to the electrode sensitive to chemically stable alkyl-ammonium cations 23 and o-phenylenediamine oxidation.…”