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Title: Biological activity of Seaweed extracts from Cladophora clavuligera (Kutzing, 1843) and Sargassum wightii (Greville, 1995) against marine fouling bacteria
Authors: Bragadeeswaran, S.
Prabhu, K.
Thangaraj, S.
Ganesan, K.
Rani, S. Sophia
Keywords: Seaweeds;Antifouling activity;Natural product;Artemia salina
Issue Date: Jun-2011
Publisher: NISCAIR-CSIR, India
Abstract: Present study was to assess the antifouling activity of seaweeds Cladophora clavuligera and Sargassum wightii collected from Tuticorin, Southeast coast of India. Crude methanol and dichloromethane extracts of the seaweeds were tested against five biofilm forming bacterial strains, Bacillus sp.1, Bacillus sp.2, Micrococcus sp. Pseudomonas sp.1 and Pseudomonas sp.2, isolated from fouling test panels. Of these, MeOH extract of Sargassum wightii showed the activity against all the bacterial stains with significant activity (6-7 mm inhibition zone at 50µl/6mm disc) against Pseudomonas sp.1 and Bacillus sp.2 whereas DCM extract showed the activity(3-4 mm inhibition zone at 50µl/6mm disc) against Micrococcus sp., Pseudomonas sp.1 and Pseudomonas sp.2. The MeOH and DCM extracts of Cladophora clavuligera (showed the activity 5 mm inhibition zone at 50µl/6mm disc) against Bacillus sp.2 and 5 mm inhibition zone at 50µl/6mm disc against Bacillus sp.1 and Pseudomonas sp.2. The seaweeds were tested moderately toxic to Artemia salina as proved by brineshrimp lethality assay.
Page(s): 398-402
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.40(3) [June 2011]

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