Journal of Applied Phycology

, Volume 23, Issue 5, pp 797–810 | Cite as

Minerals, PUFAs and antioxidant properties of some tropical seaweeds from Saurashtra coast of India

  • Manoj Kumar
  • Puja Kumari
  • Nitin Trivedi
  • Mahendra K. Shukla
  • Vishal Gupta
  • C. R. K. ReddyEmail author
  • Bhavanath Jha


Twenty-two tropical seaweeds from the Rhodophyta, Phaeophyta and Chlorophyta were examined for their possible use as nutritional supplements. All seaweeds contained balanced Na/K and C/N ratio and high amounts of macroelements (Na, K, Ca, and Mg) as compared to the terrestrial vegetables. Among the microelements, Fe was the highest followed by Zn, Mn, Cu and other trace elements. Fatty acid distribution showed high level of n-6 and n-3 polyunsaturated fatty acids (PUFAs), and their ratios were within the WHO prescribed limits. The higher ratios of PUFA/SFA (>0.4) are in agreement with the recommendations of nutritional guidelines. Most of the species, especially the Chlorophyta and Phaeophyta, had permissible intake values of unsaturation, atherogenic and thrombogenic indexes comparable to milk-based products. Principal component analysis demonstrated a correlation between total phenolic content, total antioxidant activity, DPPH, and O 2 •− radical scavenging activity, suggesting polyphenols as the chief contributor to the antioxidant activity in seaweeds. These results indicate that these seaweeds could be a potential source of natural antioxidants, minerals and high-quality PUFAs and may be efficiently used as ingredients in functional foods.


Antioxidant potential Minerals PUFAs Tropical seaweeds 



The financial support received from CSIR (NWP-018) is gratefully acknowledged. The first author (MK) and second author (PK) gratefully acknowledge the CSIR, New Delhi, for awarding the Senior and Junior Research Fellowships. The third (NT), fourth (MKS), and fifth (VG) authors also expresses their gratitude to CSIR (RSP-016) and Department of Science and Technology, New Delhi, for financial support.


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Manoj Kumar
    • 1
  • Puja Kumari
    • 1
  • Nitin Trivedi
    • 1
  • Mahendra K. Shukla
    • 1
  • Vishal Gupta
    • 1
  • C. R. K. Reddy
    • 1
    Email author
  • Bhavanath Jha
    • 1
  1. 1.Discipline of Marine Biotechnology and Ecology, Central Salt and Marine Chemicals Research InstituteCouncil of Scientific and Industrial Research (CSIR)BhavnagarIndia

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