, Volume 68, Issue 5, pp 1717–1726 | Cite as

Cytotoxicity and antimicrobial activity of marine macro algae (Dictyotaceae and Ulvaceae) from the Persian Gulf

  • Sakineh Mashjoor
  • Morteza Yousefzadi
  • Mohamad Ali Esmaeili
  • Roya Rafiee
Original Article


Pharmaceutical industry now accept the worlds ocean which contains a vast array of organisms with unique biological properties, as a major frontier for medical investigation. Bioactive compounds with different modes of action, such as, antiproliferative, antioxidant, antimicrotubule, have been isolated from marine sources, specifically macro and micro algae, and cyanobacteria. The aim of this work was to investigate antimicrobial and cytotoxic activities of the extracts of marine macro algae Ulva flexuosa, Padina antillarum and Padina boergeseni from the northern coasts of the Persian Gulf, Qeshm Island, Iran, against three cell lines including MCF7, HeLa and Vero, as well as their inhibitory effects against a wide array (i.e. n = 11) of pathogenic bacteria and fungi. Antimicrobial activity of the marine macro algal extracts was assessed using a disc diffusion method; an MTT cytotoxicity assay was employed to test the effects of the extracts on each cancer cell line. The algal extracts showed considerable antimicrobial activity against the majority of the tested bacteria and fungi. Both ethyl acetate and methanol extracts at the highest concentration (100 µg/ml) caused cell death, with the IC50 values calculated for each cell type and each algal extracts. Results are exhibited a higher decrease in the viability of the cells treated at the highest concentration of marine macro algal ethyl acetate extracts compared to the methanol extracts (78.9 % death in Vero cells by ethyl acetate extracts from U. flexuosa). Despite, the ethyl acetate extracts with lower dose- response of cells, exhibited better cytotoxic activity than methanol extracts (IC50: 55.26 μg/ml in Vero cells by ethyl acetate extracts from U. flexuosa). Based on the findings, it is concluded that the marine macro algal extracts from the Persian Gulf possess antibacterial and cytotoxic potential, which could be considered for future applications in medicine and identifying novel drugs from the marine resources.


Cytotoxicity Antimicrobial Marine algae MTT assay 



The authors wish to thank the Ministry of Science, Research and Technology of the Iranian Government for providing financial support for the research (No. 3/221617).


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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Sakineh Mashjoor
    • 1
  • Morteza Yousefzadi
    • 1
  • Mohamad Ali Esmaeili
    • 2
  • Roya Rafiee
    • 3
  1. 1.Department of Marine Biology, Faculty of Marine Sciences and TechnologyHormozgan UniversityBandar AbbasIran
  2. 2.Medicinal Plants and Drug Research, InstituteShahid Beheshti University, G.C.TehranIran
  3. 3.Department of Microbiology, Faculty of Biological ScienceShahid Beheshti University, G.C.TehranIran

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