11 research outputs found
Chemical composition and biological activities of the Black Sea algae Polysiphonia denudata (Dillw.) Kutz. and Polysiphonia denudata f. fragilis (Sperk) Woronich.
Abstract
The two investigated algae had almost identical sterol composition, but there were significant differences in the com position of the polar components and especially in the composition of the volatiles. P. denudata f. fragilis extracts possessed a stronger biological activity (antibacterial, antifungal and toxicity against Artemia salina). Despite the minute morphological differences between the two algae, we recommend P. denudata f. fragilis to be regarded as P. denudata subsp. fragilis
Composition of the lipophilic extract from the sponge Suberites domuncula
The composition of the lipophylic extract from the sponge Suberites domuncula was investigated. Lipids and their fatty acids, as well as volatile compounds and sterols were identified. Stanols are the main class of steroids in the investigated sponge. A high concentration of unsaturated long chain fatty acids (C26C28) was identified. The presence of branched and odd fatty acids indicates associated bacteria in the sponge
Original scientific paper Composition of the lipophilic extract from the sponge
Abstract: The composition of the lipophylic extract from the sponge Suberites domuncula was investigated. Lipids and their fatty acids, as well as volatile compounds and sterols were identified. Stanols are the main class of steroids in the investigated sponge. A high concentration of unsaturated long chain fatty acids (C26–C28) was identified. The presence of branched and odd fatty acids indicates associated bacteria in the sponge
A comparative study on the sterol composition of some brown algae from the Black Sea
The sterol composition of the brown algae Stilophora rhizodes (Turner) J. Agardh, Punctaria latifolia Grev. and Punctaria plantaginea (Roth.) Grev. from the Black Sea was investigated. Fifteen sterols were identified in the sterol fractions. The main ones were cholesterol and 24-methylenecholesterol. Characteristic for brown algae, fucosterol was present in low concentrations. The results obtained were compared with recent data for the sterol composition of other Black Sea brown algae. Some conclusions concerning the evolutionary position of brown algae are made
UDC 547.538.141+582.26:575.852'1 Original scientific paper A comparative study on the sterol composition of some brown
Abstract: The sterol composition of the brown algae Stilophora rhizodes (Turner) J. Agardh
Chemical Composition and Biological Activities of the Black Sea Algae Polysiphonia denudata (Dillw.) Kutz. and Polysiphonia denudata f. fragilis (Sperk) Woronich
Abstract
The two investigated algae had almost identical sterol composition, but there were significant differences in the com position of the polar components and especially in the composition of the volatiles. P. denudata f. fragilis extracts possessed a stronger biological activity (antibacterial, antifungal and toxicity against Artemia salina). Despite the minute morphological differences between the two algae, we recommend P. denudata f. fragilis to be regarded as P. denudata subsp. fragilis