| Autor: |
LEONTIEŞ, ANCA-RUXANDRA, RĂDUCAN, ADINA, GÎFU, IOANA CATALINA, ANGHEL, DAN FLORIN |
| Předmět: |
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| Zdroj: |
Studia Universitatis Babes-Bolyai, Chemia; Dec2017, Vol. 62 Issue 4,Tom1, p11-19, 9p |
| Abstrakt: |
The oxidation of catechin in the presence of atmospheric oxygen in a methanol/buffer model solution was studied by investigating generated products using LC/MS and spectrophotometry. It was proved that catechin was slowly converted to dimeric species with similar structures and properties. The catechin autoxidation was investigated spectrophotometrically at different pH ranging between 5 and 10. Using the initial linear dependence of the kinetic curves [Dimers] = f(t) the initial reaction rates were estimated for the autoxidation of catechin in methanol/buffered solutions. It was found that the dimer formation is favored at pH 8. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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