Laminaria hyperborea

Brown macroalga, Laminaria hyperborea 250 Reduced growth of sporophytes in 8-10 days 2... 

D-Mannuronic acid (36) constitutes the major component of alginic acid, the main polysaccharide of the brown algae, in which L-guluronic acid (37) is also found. The ratio of D-mannuronic acid and L-guluronic acid can vary with the algal species, the type of tissue, and the age of the plant. In the case of Laminaria hyperborea, L-guluronic acid is the major component.130... 

Fredriksen, S., Sjotun, K., Lein, T.E., and Rueness, J., Spore dispersal in Laminaria hyperborea (Laminariales, Phaeophyceae), Sarsia, 80, 47, 1995. 

These materials are polysaccharides and the name derives from their original source, brown algae. Current commercial sources are brown seaweeds such as Laminaria digitata, Laminaria hyperborea, Ascophyl-lium nodosum and Fucus serratus. Different properties are obtained in alginates from different seaweeds found in different regions, where typical sources are found along rocky coastlines in the US, the UK, France and Norway. 

Laminaria hyperborea (intracellular) Laminarin (3,6-6-glucan) GIvceollin (Glvcine max) 84... 

Algins/alginic acid Laminaria digitata, Laminaria hyperborea... 

Table 1. M G ratios from various alginate sources (46,47). Alginate Source Laminaria hyperborea...

Figure 4 Activity concentration of Tc in the stipes and blades of Laminaria hyperborea collected from the Western Coast of Norway, since 1997. (Mobbs H and Saibu B (2002) Temporal changes in technelium-99 activity in algae from the Norwegian Coast. In Borretzen P, Jolle T, and Strand P (eds.) Radioactivity in the Environment, p. 610.0steras Norwegian Radiation Protection Authority.)...

Alginate is extracted from brown algae (Phaeophyceae), including Laminaria digitata, Laminaria hyperborea. Laminaria japonica, Macrocystis pyrifera, and Ascophyllum nodosum [27] by treatment with aqueous alkali (NaOH) solutions [28], The filtered extract is treated with sodium or calcium chloride to precipitate alginate. Azotobacter and Pseudomonas may produce alginate by a biosynthesis pathway. 

Alginates, which are also called alginic acids, are anionic linear polysaccharides secreted by brown seaweed and marine algae, including Laminaria hyperborea, Ascophyllum nodosum and Macrocystis pyrifera [3]. 

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