| Autor: |
Dulce Helena Siqueira Silva, F. C. Pereira, M. Yoshida, Maria Valnice Boldrin Zanoni |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Eclética Química, Vol 30, Iss 3, Pp 15-21 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
1678-4618 |
| DOI: |
10.26850/1678-4618eqj.v30.3.2005.p15-21 |
| Popis: |
TLC autographic assays revealed in the hexane extract of Iryanthera juruensis (Myristicaceae) the presence of two compounds, with antioxidant properties towards β-carotene. They were isolated and identified as 3-methyl-sargachromenol (1) and sargachromenol (2). Further investigation of the hexane extract led to isolations of 3-methyl-sargaquinoic acid (3) and sargaquinoic acid (4). The electrochemical behaviour of these compounds was studied in CH 2 Cl 2 /Bu 4 NBF 4 at glassy carbon electrode. The phenolic group in both tocotrienols 1 and 2 are oxidized at +0.23V and +0.32V and their oxidation potentials are correlated with the observed antioxidant activities and oxidation mechanism of α-tocopherol. The reductive voltametric behaviour of quinone function in both plastoquinones 3 and 4 is discussed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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