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RESEARCH ARTICLE
Year : 2009  |  Volume : 1  |  Issue : 6  |  Page : 428-430

Biological activity of two red algae, Gracilaria salicornia and Hypnea flagelliformis from Persian Gulf.


1 Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
2 Department of Pharmaceutical Biotechnology and Pharmaceutical Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
3 Department of Marine Science and Technology, Science and Research Isalmic Azad University, Tehran, Iran
4 Department of Sea Biology, Iranian Academic Center for Education, Culture and Research, Tarbiat Moallem Branch, Tehran, Iran

Correspondence Address:
S Saeidnia
Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran
Iran
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Source of Support: None, Conflict of Interest: None


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Among marine organisms, algae are a large and diverse group of organisms from which a wide range of secondary metabolites have been isolated. A number of these compounds possess biological activity. In this study, we aim to evaluate the cytotoxic, antibacterial and antifungal activity of two red algae, Gracilaria salicornia and Hypnea flagelliformis, collected from Persian Gulf. Ethyl acetate extracts of both algae showed a potent cytotoxic effect against Artemia salina nauplii (LC50 = 3 and 4 μg.ml−1, respectively). Aqueous methanol (50%) extracts were also effective. None of the methanol and aqueous methanol extracts of the algae showed antifungal and antibacterial activity against Staphylococcus aureus, Escherichia coli, Candida albicans and Aspergillus niger by the Broth-dilution method. Only the ethyl acetate extracts exhibited antibacterial activity (MIC = 2 μg.ml−1) on S. aureus. In conclusion, G. salicornia and H. flagelliformis could be a promising source of cytotoxic components.


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