Journal
FOOD CHEMISTRY
Volume 102, Issue 3, Pages 577-581Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2006.05.036
Keywords
marine algae; radical scavenging activity; chemiluminescence; DPPH; Taonia atomaria
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In the present work, thirteen algae from the Aegean Sea were examined for radical-scavenging activity (RSA) using the DPPH and chemiluminescence (CL) tests. Extracts of the brown alga Taonia atomaria exhibited the best RSA in comparison to the extracts of the other investigated species and approached the activity of powerful antioxidant standards. Column chromatography separation of T atomaria extract, followed by preparative HPLC, resulted in the isolation of six metabolites, which were identified by spectral analyses (H-1 NMR, C-13 NMR and MS). The isolated metabolites taondiol, isoepitaondiol, stypodiol, stypoldione, sargaquinone and sargaol were found to possess marked RSA. (c) 2006 Elsevier Ltd. All rights reserved.
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