Susann Kreitlow

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Cyanobacteria are a very old group of prokaryotic organisms that produce a variety of secondary metabolites with antibiotic, algicide, cytotoxic, immunosuppressive and enzyme inhibiting activities. In the last decades structures of pure compounds have been determined as phenols, peptides, alkaloids or terpenoids (Falch, 1996). Screening of lipophilic and(More)
Hydrophilic and lipophilic extracts of twelve cyanobacterial strains, isolated from fresh and brackish water, and two waterblooms, collected during the summer from the Baltic Sea, were investigated for their antibiotic activities against seven microorganisms. No inhibitory effects were found against the three Gram-negative bacteria Escherichia coli, Proteus(More)
Bioassay-guided fractionation of the n-hexane extract prepared from the biomass of the cyanobacterium Oscillatoria redekei syn. Limnothrix redekei HUB 051 by silica gel and RP-18 column chromatography followed by HPLC resulted in the isolation of a mixture of two unsaturated hydroxy fatty acids. Their further separation using normal phase HPLC resulted in(More)
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