Kinetics of the Oxidation of Protocatechuic and Gallic Acids by Atmospheric Oxygen in the Presence of Laccase from T. versicolor
| Autor: | V. V. Aleksandriiskii, A.N. Kiselev, M. N. Zavalishin, A. V. Zav’yalov, G. A. Gamov, A. V. Gashnikova, A. Yu. Khokhlova |
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| Rok vydání: | 2020 |
| Předmět: |
Laccase
Absorption spectroscopy Kinetics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Mass spectrometry 01 natural sciences Michaelis–Menten kinetics Protocatechuic acid 0104 chemical sciences chemistry.chemical_compound Reaction rate constant chemistry Gallic acid Physical and Theoretical Chemistry 0210 nano-technology Nuclear chemistry |
| Zdroj: | Russian Journal of Physical Chemistry A. 94:294-300 |
| ISSN: | 1531-863X 0036-0244 |
| Popis: | The oxidation of 3,4-dihydroxybenzoic and 3,4,5-trihydroxybenzoic acids by atmospheric oxygen in the presence of laccase from T. versicolor is studied via electronic absorption spectroscopy. The molar extinction coefficients of intermediate and final products, the rate constants, and the initial rates of oxidation are determined by means of the maximum likelihood approach. The parameters of the Michaelis–Menten equation are calculated. Polymeric oxidation products are isolated, and their composition is investigated via mass spectrometry and 13C NMR spectroscopy. |
| Databáze: | OpenAIRE |
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