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Open AccessArticle

Cellular Antioxidant Effect of Four Bromophenols from the Red Algae, Vertebrata lanosa

1
MabCent-SFI, University of Tromsø, Breivika, N-9037, Tromsø, Norway
2
Marbio, University of Tromsø, Breivika, N-9037, Tromsø, Norway
3
Department of Chemistry, University of Tromsø, Breivika, N-9037 Tromsø, Norway
*
Author to whom correspondence should be addressed.
Mar. Drugs 2013, 11(8), 2769-2784; https://doi.org/10.3390/md11082769
Received: 3 May 2013 / Revised: 14 June 2013 / Accepted: 12 July 2013 / Published: 5 August 2013
Three known bromophenols, 2,3-dibromo-4,5-dihydroxybenzylaldehyde (1), 2,2′,3-tribromo-3′,4,4′,5-tetrahydroxy-6′-hydroxymethyldiphenylmethane (2) and bis(2, 3-dibromo-4,5-dihydroxylbenzyl) ether (3), and one new one, 5,5″-oxybis(methylene)bis (3-bromo-4-(2′,3′-dibromo-4′,5′-dihydroxylbenzyl)benzene-1,2-diol) (4), were isolated from an extract of the red alga, Vertebrata lanosa. The antioxidant activity of these four bromophenols was examined using one biochemical and two cellular assays: Oxygen Radical Absorbance Capacity (ORAC), Cellular Antioxidant Activity (CAA) and Cellular Lipid Peroxidation Antioxidant Activity (CLPAA) assays. Compound 2 distinguished itself by showing potent activity, having a better antioxidant effect than luteolin in both the CAA and CLPAA assays and of quercetin in the CLPAA assay. Although several bromophenols are known to be potent antioxidants in biochemical assays, this is the first time their cellular antioxidant activity has been demonstrated. View Full-Text
Keywords: marine algae; macro algae; bioactivity; cellular antioxidant assay; ORAC marine algae; macro algae; bioactivity; cellular antioxidant assay; ORAC
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Olsen, E.K.; Hansen, E.; Isaksson, J.; Andersen, J.H. Cellular Antioxidant Effect of Four Bromophenols from the Red Algae, Vertebrata lanosa. Mar. Drugs 2013, 11, 2769-2784.

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