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Laccase (oxygen oxidoreductase, EC 1.10.3.2) from Trametes versicolor was thoroughly characterized in terms of its catalytic stability and its effectiveness as a biocatalyst under various reaction conditions when using phenol as a model substrate. This enzyme demonstrated high or moderate degrees of stability at pHs from 5 to 8 at 25°C and at temperatures from 10 to 30°C at pH 6. Exponential decay...
Aqueous phenol was ozonated for the first time at pH over 12. Results obtained under conditions favoring rapid generation of radicals completely eliminated the possibility deduced from the absorption theory that the indirect radical reaction might be one of the reaction pathways. Meanwhile, it was found in this study that the apparent first-order rate constant of phenol ozonation decreased logarithmically...
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