On the antioxidant activity of eumelanin biopigments: a quantitative comparison between free radical scavenging and redox properties
Teresa Cecchi
Alessandro Pezzella
Eduardo Di Mauro
Samuel Cestola
David Ginsburg
Mattia Luzi
Alessandro Rigucci
Clara Santato
10.6084/m9.figshare.7539452.v1
https://tandf.figshare.com/articles/journal_contribution/On_the_antioxidant_activity_of_eumelanin_biopigments_a_quantitative_comparison_between_free_radical_scavenging_and_redox_properties/7539452
<p>The antioxidant activity of eumelanin, a ubiquitous pigment in flora and fauna, constitutes one of its most fascinating physicochemical properties. To shed light on free radical scavenging vs redox facets of such activity, we applied hydrogen atom transfer- and electron transfer-based assays to pristine <i>Sepia</i> ink, eumelanin from <i>Sepia</i> ink, chemically controlled eumelanins and their precursor building blocks. Our work contributes to the rational use of the antioxidant properties of eumelanin for health, cosmetics and environmental applications.</p>
2019-01-02 13:11:58
Eumelanin
biopigment
DHI (5,6‐dihydroxyindole)
DHICA (5,6‐dihydroxyindole-2‐carboxylic acid)
Sepia ink
Briggs-Rauscher assay
Folin Ciocalteu assay