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    Antifouling potential of some marine organisms from India against species of Bacillus and Pseudomonas

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    Mar_Biotechnol_4_111.pdf (284.5Kb)
    Date
    2002
    Author
    Bhosale, S.H.
    Nagle, V.L.
    Jagtap, T.G.
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    Abstract
    Crude methanolic extracts of 37 marine organisms (16 species of flora, 21 species of fauna) were screened for antibacterial properties against 5 strains of bacteria isolated from marine environments. Of these, 10 plant and 9 animal extracts exhibited antibacterial activity against at least one bacterial strain. The extracts of 6 species were active against all the strains: i.e., Stoechospermum marginatum (brown algae), Cymodocea rotundata (seagrass), Petrosia sp. and Psammaplysilla purpurea (sponges), Sinularia compressa (soft coral), and Cassiopeia sp. (jellyfish). Among the plants, Padina tetrastromatica (brown algae) extract exhibited significant activity (9-11-mm inhibition zone at 500 mu g per 6-mm disc) against Bacillus pumilus and Pseudomonas vesicularis, while the extracts of Petrosia, Psammaplysilla, and Cassiopeia were strongly active (11-13-mm inhibition zone at 500 mu g per 6-mm disc) against B. circulans and P. putida. It was further confirmed that the attachment of bacterial strains on glass slide was inhibited remarkably with increasing concentrations of bioextracts of Petrosia sp. and Psammaplysilla purpurea. The present findings could form the basis for exploring the antibacterial potential of bioactive molecules from some of the marine organisms that exhibited moderate to strong antibacterial properties.
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    http://drs.nio.org/drs/handle/2264/1425
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