Highly reactive intermediates in photochemistry of chlorophyll
| Autor: | A. V. Lobanov, G. G. Komissarov |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
inorganic chemicals
chemistry.chemical_classification Reactive oxygen species Singlet oxygen Reactive intermediate Biophysics food and beverages chemistry.chemical_element macromolecular substances Hydrogen atom Photochemistry Oxygen chemistry.chemical_compound Monomer chemistry Chlorophyll polycyclic compounds Hydrogen peroxide |
| Zdroj: | Biophysics. 58:51-55 |
| ISSN: | 1555-6654 0006-3509 |
| DOI: | 10.1134/s0006350913010119 |
| Popis: | It is shown that chlorophyll (Chl) has photochemical activity in the reduction of O2 to H2O2. In the case of the monomeric forms of Chl, H2O2 formation occurs with the participation of 1O2, ⊙OH and O2⊙−. Activity of Chl depends on its microenvironment and pH of the system. Associated forms of Chl do not photosensitize 1O2 formation, but are active in transfer of electrons to oxygen that leads to H2O2 generation. Also it is found that Chl associates are able to act as electron donors to reduce H2P4− and subsequently form hydrogen atom. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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