5 - , from brown alga

Todd, J.S. Protean, P.J. Gerwick, W.H. (1994) The absolute configuration of ecklmiialactones A, B, and E, novel oxylipins from brown algae of the gaiera Ecklonia and Egregia. J. Nat. Prod., 57,171-4. 

Pereira, M. S., Mulloy, B., and Mourao, P. A. (1999). Structure and anticoagulant activity of sulfated fucans. Comparison between the regular, repetitive, and linear fucans from echinoderms with the more heterogeneous and branched polymers from brown algae. ]. Biol. Chem. 274, 7656-7667. 

Almeida M, Filipe S, Humanes M, Maia MF, Melo R, Severino N, da Silva JAL, Frausto da Silva JJR, Wever R (2001) Vanadium Haloperoxidases from Brown Algae of the Laminari-aceae Family. Phytochemistry 57 633... 

Among the plant polysaccharides there may be mentioned the hemi-celluloses the most common of these contain 4-O-methyl-D-glucuronic acid as branch units linked to a /3-D-xylan backbone.110 The commercially important gum arabic, a soluble polysaccharide produced by Acacia trees and widely used in foods and pharmaceuticals, also contains glucuronic units.111 D-Glucuronic acid has been found in sulfated complex polysaccharides from brown algae.112... 

Polysaccharides from plants, too, can form gels in water. Pectin is used to help gel jams and fruit preserves. Some polysaccharides are used to thicken foods. Alginic acid, extracted from brown algae, is a linear polymer containing many carboxylic acid groups. The sodium salt is soluble in water and is used as a thickener in the preparation of ice cream and other foods. If a sodium alginate solution is mixed with calcium ion, the polysaccharide pre-... 

Haugan, J., and Liaeen-Jensen, S. 1994. Algal carotenoids Carotenoids from brown algae (Phaeophyceae). Biochem. Sys. Ecol., 22, 31-41. 

Alginic acid Linear polymer made of P-1, 4-D-mannuronic and 1-glucuronic acids Extracted from brown algae, the polymer sodium salt and not the free acid or calcium salt dissolves in water Thickening, emulsifying, or gel-forming agent... 

Diterpene 168 and several similar compounds were isolated from brown alga Dictyota prolificans. The presence of the 1,3-diene in 168 was secured by its rapid reaction with PTAD and the mass spectrum of the adduct 169 proved the structure (82AJC121). 

The substitution pattern in two homologous furans isolated from brown alga Acrocarpia paniculata was determined by their reaction with PTAD. Compound 170, provided diketone 171 as the final product formed via the corresponding Diels-Alder adduct. Structure elucidation of this product then proved the structure of 170 (82AJC165). 

TABLE 8.1 Radical scavenging activities of phlorotannins from brown algae... 

Yang, H., Zeng, M., Dong, Z., Liu, Z., and Li, R. (2010). Anti-proUferative activity of phlorotannin extracts from brown algae Laminaria japonica Aresch. Chin. J. Oceanol. 

Heo, S., Ko, S., Kang, S., Kang, H., Kim, Kim, S., Lee, K., Cho, M., and Jeon, Y. (2008). Cytoprotective effect of fucoxanthin isolated from brown algae Sargassum siliquastrum against H202-induced cell damage. Eur. Food Res. Technol. 228,145-151. 

Senni, K., Gueniche, F., Foucault-Bertaud, A., Igondjo-Tchen, S., Fioretti, F., Colliec-Jouault, S., Durand, P., Guezennec, J., Godeau, G., and Letourneur, D. (2006). Fucoidan a stdfated polysaccharide from brown algae is a potent modulator of coimective tissue proteolysis. Arch. Biochem. Biophys. 445,56-64. 

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