Twenty-eight plant species belonging to fifteen families were subjected to a screening for total alkaloids, saponins and phenolic compounds, especially flavonoids and tannins. Both WA6raER'S and MAXER'S reagents were employed in the alkaloid screening. Ferric chloride solution was used to detect phenolic compounds. Tannins were detected by the gelatine-salt block test. SmNODA'S colour reaction was used to detect flavonoids. Saponins were detected by the froth method. The species investigated are characteristic salt marsh plants of the Lower Saxonian Wadden Sea coast. Five species gave positive alkaloid reactions with both reagents while four others were reactive only in one test. For the other twenty-three species the presence of alkaloids can be excluded. Ten species did not contain any phenolic compounds while eighteen showed a colour reaction with ferric chloride solution. Nine of these gave a positive reaction with the gelatine-salt block test and twelve gave positive reactions to the flavonoid test. Ir can therefore be assumed that at least three species contain phenolic compounds other than flavonoids or tannins. Seven species gave a positive saponin test.
LELLaU, T. E & LIEBEZEiT, G. (2003): Activiry of ethanolic extracts of salt marsh plants from the Lower Saxonian Wadden Sea coast against microorganisms. -Senckenbergiana marit., 32 (1/2): 177-181, 3 tabs.; Frankfurt a.M.]Ethanolic extracts of the aerial parts of twenty-eight plant species belonging to fifteen families were subjected to a screening for activity against seven fungal, three yeast, five algal and six bacterial species. The extracts ofArtemisia maritima L. (Asteraceae) and Salicornia europaea L. (Chenopodiaceae) showed the highest inhibitory action against algae. The highest inhibition of fungal growth was caused by the extract of Triglochin maritima L. (Juncaginaceae). Only S. europaea showed significant activity in both ofthese assays. The extract from Limonium vulgare MIEL. was the only one to show any significant activity against bacteria. Six species did not produce any activity at all. KATJA STERFLINGER and MATHIAS HEIN kindly provided the fungal species investigated, three algal species were supplied by UWE WINKLER, while the bacteria and two yeast species were edgements supplied by WOLFGANG E. KRUMBEIN and KARIN PETERSEN. We are indebted to PETER JANIESCH for suggestions to improve the manuscript.
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