Formate Oxidase (FOx) from Aspergillus oryzae : One Catalyst Enables Diverse H 2 O 2 ‐Dependent Biocatalytic Oxidation Reactions

Co+2-Substituted Acylamino Acid Amido Hydrolase from Aspergillus oryzae

The inactivation of the Zn+2 metallo enzyme acylamino acid amido hydrolase from Aspergillus oryzae by ethylendiamine-tetraacetate (EDTA) and nitrilotriacetate (NTA) and the effects of Phe and His on this process were studied. Reactivation of the enzyme by Zn+2or Co+2-NTA buffer revealed a dissociation constant for the Zn+2-enzyme of 10~10 M and for the Co+2-enzyme of 10-7-5 m. The kinetic prope...

O + + H 2 O „ + M ... \ H 5 O 2 + „ + M ...

Removal of pharmaceuticals using combination of UV/H(2)O(2)/O(3) advanced oxidation process.

Water and wastewater effluents contain a vast range of pharmaceutical chemicals. The present study aims to determine the potential of the advanced oxidation technology UV/H(2)O(2)/O(3) and its sub-processes (i.e. UV, UV/H(2)O(2), UV/O(3), O(3) and H(2)O(2)/O(3)) for the degradation of the antibiotics ciprofloxacin (CIP) and trimethoprim (TMP), and the antineoplastic drug cyclophosphamide (CPD) ...

Spectroscopy of the transition state : Elementary reactions of the hydroxyl radical studied by photoelectron spectroscopy of O 2 ( H 2 O ) and H 3 O 2 2

The transition state regions of the OH1OH→O~P!1H2O and the OH1H2O→H2O1OH reactions are studied by photoelectron spectroscopy of the O~H2O! and H3O2 2 anions and their deuterated analogs. The spectra show resolved vibrational progressions attributed to H-atom vibrational motion in the unstable neutral complexes formed by photodetachment. The positions and intensities of the peaks change markedly...

Kinetics of HO 2 + HO 2 ! H 2 O 2 + O 2 : Implications for Stratospheric H

[1] The reaction HO2 + HO2 ! H2O2 + O2 (1) has been studied at 100 Torr and 222 K to 295 K. Experiments employing photolysis of Cl2/CH3OH/O2/N2 and F2/H2/O2/N2 gas mixtures to produce HO2 confirmed that methanol enhanced the observed reaction rate. At 100 Torr, zero methanol, k1 = (8.8 ± 0.9) 10 13 exp[(210 ± 26)/T] cm molecule 1 s 1 (2s uncertainties), which agrees with current recommendations...