scholarly journals A comparative study on the sterol composition of some brown algae from the Black Sea

2003 ◽  
Vol 68 (4-5) ◽  
pp. 269-275 ◽  
Author(s):  
Zotnitsa Kamenarska ◽  
Stefka Dimitrova-Konaklieva ◽  
Ljubomirov Stefanov ◽  
Simonov Popov
Keyword(s):  
Comparative Study ◽  
Black Sea ◽  
Brown Algae ◽  
Sterol Composition ◽  
The Black Sea ◽  
Low Concentrations

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.

Sterol composition and biosynthesis in the Black Sea sponge Dysidea fragilis

1994 ◽  
Vol 107 (4) ◽  
pp. 547-551 ◽  
Author(s):  
Ivaylo Elenkov ◽  
Tsenka Milkova ◽  
Stoitse Andreev ◽  
Simeon Popov
Keyword(s):  
Black Sea ◽  
Sterol Composition ◽  
The Black Sea

scholarly journals Chemical composition of the Black Sea trout (Salmo labrax Pallas, 1814): A comparative study

2020 ◽  
Vol 3 (4) ◽  
pp. 208-219
Author(s):  
Ekrem Cem Çankırılıgil ◽  
Nermin Berik
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Black Sea ◽  
The Black Sea ◽  
Sea Trout

scholarly journals New alien in the Black Sea: brown algae Chorda tomentosa Lyngb.

Algologia ◽  
2015 ◽  
Vol 25 (3) ◽  
pp. 323-329 ◽  
Author(s):  
G.G. Minicheva ◽  
Keyword(s):  
Black Sea ◽  
Brown Algae ◽  
The Black Sea

scholarly journals Content of fucoxanthin in some brown algae from the Black Sea (Phaeophyceae, Ochrophyta)

Algologia ◽  
2019 ◽  
Vol 29 (3) ◽  
pp. 278-286
Author(s):  
F.P. Tkachenko ◽  
◽  
I.P. Yakuba ◽  
Keyword(s):  
Black Sea ◽  
Brown Algae ◽  
The Black Sea

scholarly journals Chemical Composition of the Lipophylic Extract from the Tunicate Botryllus schlosseri

2000 ◽  
Vol 55 (9-10) ◽  
pp. 794-798 ◽  
Author(s):  
Krasimir Slantchev ◽  
Kamen Stefanov ◽  
Katya Seizova ◽  
Simeon Popov ◽  
Stoitse Andreev
Keyword(s):  
Double Bond ◽  
Chemical Composition ◽  
Volatile Compounds ◽  
Black Sea ◽  
Marine Invertebrates ◽  
Sterol Composition ◽  
The Black Sea ◽  
Botryllus Schlosseri

Abstract Eighteen sterols were identified in Botryllus schlosseri, stanols being the main sterols. The sterol composition is in agreement with our recent paper on taxonomic separation of tunicates into three groups. Again we found in invertebrates of the Black Sea sterols with a (22Z)-double bond. This confirms the presence of such sterols in nature. The composition of the phospholipids appeared to be complex, and twelve groups of them were identified in Botryllus schlossen. The main representatives of phospholipids appeared to be phosphatidylcholine and phosphatidylethanolamine. Only four volatile compounds were identified, which is unusual for marine invertebrates.

scholarly journals Elemental accumulation in the black sea brown algae cystoseira studied by neutron activation analysis

2014 ◽  
Vol 21 (1) ◽  
pp. 9-23 ◽  
Author(s):  
Alexandra Kravtsova ◽  
Nataliya Milchakova ◽  
Marina Frontasyeva
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Black Sea ◽  
Coastal Waters ◽  
Brown Algae ◽  
The Black Sea ◽  
Cystoseira Barbata ◽  
Elemental Accumulation ◽  
First Time

Abstract For the first time the concentration of 26 macro- and microelements (Na, Mg, Al, Cl, K, Ca, Sc, V, Mn, Fe, Co, Ni, Zn, As, Br, Rb, Sr, Sb, I, Cs, Ba, Sm, Nd, Ag, Au, and U) in the thalli of brown algae Cystoseira barbata C. Ag. and Cystoseira crinita (Desf.) Bory was determined by instrumental neutron activation analysis (INAA), Sevastopol region, south-western Crimea, the Black Sea. The observed peculiarities of the elemental accumulation showed that Cystoseira spp. can be used as a biomonitor of coastal waters pollution in the study area.

Sterol Composition of the Black Sea Sponges Hymeniacidon sanguinea (Grant) and Halichondria panicea (Pallas)

1999 ◽  
Vol 54 (11) ◽  
pp. 972-976 ◽  
Author(s):  
Ivayh Elenkov ◽  
Simeon Popov ◽  
Stoitze Andreev
Keyword(s):  
Black Sea ◽  
Sterol Composition ◽  
Side Chain ◽  
The Black Sea ◽  
Short Side ◽  
Halichondria Panicea ◽  
Dietary Sterols

Abstract The sterol composition of Hymeniacidon sanguinea and Halichondria panicea from the Black Sea was investigated. Both sponges contain similar mixtures of stanols and of dietary Δ5-sterols. Main sterols appeared to be C27-sterols, which could be connected with a common diet for the both sponges. Saturated short side chain sterols have been found in Hymeniaci­don sanguinea. Three of them were novel for sponges. A possibility for the transformation of some dietary sterols into stands is discussed.

scholarly journals Chemical Composition and Biological Activities of the Black Sea Algae Polysiphonia denudata (Dillw.) Kutz. and Polysiphonia denudata f. fragilis (Sperk) Woronich

2001 ◽  
Vol 56 (11-12) ◽  
pp. 1008-1014 ◽  
Author(s):  
Salvatore De Rosa ◽  
Zornitsa Kamenarska ◽  
Vassya Bankova ◽  
Kamen Stefanov ◽  
Stefka Dimitrova-Konaklieva ◽  
...  
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Black Sea ◽  
Biological Activities ◽  
Artemia Salina ◽  
Sterol Composition ◽  
The Black Sea ◽  
Polar Components

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.

Sign in / Sign up

Export Citation Format

Share Document