Journal of Applied Phycology

, Volume 25, Issue 4, pp 1189–1196

Antioxidant activity of brown alga Saccharina bongardiana from Kamchatka (Pacific coast of Russia). A methodological approach

  • Lizette Auezova
  • Fadia Najjar
  • Olga Selivanova
  • Elie Hajj Moussa
  • Mona Diab Assaf


The present study aims to investigate the levels of polyphenols and antioxidant activity in one of the most important commercial species of seaweeds in Kamchatka, an edible brown seaweed Saccharina bongardiana. Six extracts of S. bongardiana, acetone, methanol, ethanol, and the respective 70 % aqueous solutions, were assessed for total phenol content in order to determine the most efficient extracting solvent. The total phenol content was measured by the Folin–Ciocalteu method and expressed as phloroglucinol equivalents (PGE). The antioxidant tests used were 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay, linoleic acid-β carotene oxidation inhibiting assay, and Fe2+ ion chelating method. Higher phenolic contents were obtained using aqueous organic solvents, as compared to the respective absolute solvents; 70 % acetone was found to be the most efficient solvent (1.039 mg PGE 100 mg−1 dry algal powder). High significant correlations were noted between total phenol content and the tested antioxidant activities; so the aqueous organic extracts exhibited the highest antioxidant activities versus DPPH radicals (EC50 values of 0.6–1.1 mg dry weight (DW) mL−1), linoleic acid-β carotene oxidation (74–78 % at 0.8 mg DW mL−1), as well as ferrous ions (EC50 values of 5.0–7.9 mg DW mL−1). Some methodological recommendations regarding the assays used and the expression of results are proposed.


Saccharina bongardiana Brown algae Phaeophyta Antioxidant Phenolics Effect of solvent 


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Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • Lizette Auezova
    • 1
  • Fadia Najjar
    • 1
  • Olga Selivanova
    • 2
  • Elie Hajj Moussa
    • 1
  • Mona Diab Assaf
    • 1
  1. 1.Department of Chemistry, Faculty of Sciences IILebanese UniversityJdaidet el MatnLebanon
  2. 2.Kamchatka Branch of Pacific Geographical InstituteFar Eastern Division of the Russian Academy of SciencesPetropavlovsk-KamchatskyRussia

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