Radical-scavenging capacity of phenol fractions in the brown seaweed Ascophyllum nodosum: An electrochemical approach
| Autor: | Nathalie Blanc, Erwan Ar Gall, Didier Hauchard, Laetitia Audibert |
|---|---|
| Přispěvatelé: | Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Écophysiologie et de Biotechnologie des Halophytes et des Algues Marines (LEBHAM), Université de Brest (UBO), This study received a financial support from the Regional Council of Brittany (PRIR n◦1125). The authors acknowledge the CEVA ('Centre d'Etudes et de Valorisation des Algues', Pleubian, Brittany, France) for its participation to PRIR n◦1125., Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2011 |
| Předmět: |
0106 biological sciences
DPPH Phlorotannins Phenol content 01 natural sciences Antioxidants Analytical Chemistry chemistry.chemical_compound [CHIM.GENI]Chemical Sciences/Chemical engineering Phenols [CHIM.ANAL]Chemical Sciences/Analytical chemistry Electrochemistry Organic chemistry Phenol [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Radical-scavenging Colorimetry Ascophyllum Chromatography ABTS biology Molecular mass [SDE.IE]Environmental Sciences/Environmental Engineering 010604 marine biology & hydrobiology 010401 analytical chemistry Free Radical Scavengers Seaweed biology.organism_classification 0104 chemical sciences chemistry Cyclic voltammetry |
| Zdroj: | Talanta Talanta, Elsevier, 2011, 84 (2), pp.513-518. ⟨10.1016/j.talanta.2011.01.034⟩ Talanta, 2011, 84 (2), pp.513-518. ⟨10.1016/j.talanta.2011.01.034⟩ |
| ISSN: | 0039-9140 |
| DOI: | 10.1016/j.talanta.2011.01.034 |
| Popis: | International audience; In this article, the radical-scavenging capacity of phenol fractions extracted from the brown seaweed Ascophyllum nodosum was assessed using in parallel colorimetric methods (ABTS and DPPH) and electrochemistry (cyclic voltammetry). Results obtained by the three methods correlated in the case of global fractions, whereas only ABTS and DPPH correlated when activities were expressed on a phenol basis. The successive fractions separated by both their average molecular size and their polarity exhibited activities largely dependent on their phenol content, suggesting that phlorotannins are the main anti-oxidant molecules in hydro-alcoholic extracts of A. nodosum. In addition, phenol fractions of relative low molecular weight were clearly more active than others. This work opens new opportunities to better evaluate the radical-scavenging potential of phenol pools in algae using both bi-parametric fractionating and electrochemistry. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect