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标题：Antifouling activity of seaweed extracts from Guarujá, São Paulo, Brazil
其他标题：Antifouling activity of seaweed extracts from Guarujá, São Paulo, Brazil
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作者：Medeiros, Heloisa Elias ; Gama, Bernardo Antonio Perez da ; Gallerani, Gianfranco 等
期刊名称：Brazilian Journal of Oceanography
印刷版ISSN：1679-8759
电子版ISSN：1982-436X
出版年度：2007
卷号：55
期号：4
页码：257-264
DOI：10.1590/S1679-87592007000400003
出版社：Instituto Oceanográfico da Universidade de São Paulo
摘要：Marine biofouling historically constitutes one of the major constraints faced by mankind in its oceanic activities. The search for alternatives to TBT-based antifouling paints has led several researchers to focus efforts in the development of environmentally friendly natural compounds. This work has contributed with this search, testing the antifouling potential of crude organic extracts from four seaweed species collected at Praia Branca, Guarujá district, São Paulo, Brazil. Throughout laboratory antifouling assays in which the attachment of a common fouling organism, the brown mussel Perna perna, was employed, antifouling activity (p < 0.05) was detected in natural concentrations of the extracts of Jania rubens (Rhodophyta, Cryptonemiales) and Bryothamnion seaforthii (Rhodophyta, Ceramiales), while Dictyopteris delicatula (Phaeophyta, Dictyotales) and Heterosiphonia gibbesii (Rhodophyta, Ceramiales) did not exhibit fouling inhibition. From the algae that exhibited antifouling activity, J. rubens presented best performance when compared to that of B. seaforthii. Future field studies would be necessary to obtain results that can better reflect natural conditions, as well as to assess the activity spectrum of the antifouling activity presently recorded. Further bioassay-guided purification of the active extracts can lead to new alternatives to the metal-based antifouling paints currently in use.
关键词：Atividade antiincrustante;Algas marinhas;Metabólitos secundários;Produtos naturais marinhos;Bioincrustação;Ecologia química marinha;Epibiose
其他关键词：Antifouling activity;Seaweeds;Secondary metabolites;Marine natural products;Biofouling;Marine chemical ecology;Epibiosis