Laminaria cloustoni

PROP Dehydrated seaweed, dark green to brown salty, characteristic taste. From Macrogstis pyrifera, laminaria digitata, ]-aminaria saccharina, and laminaria cloustoni. SAFETY PROFILE When heated to decomposition it emits acrid smoke and irritating fumes. 

Details of the methods used by the alginate-producing firms in Great Britain, France, and Norway have not been published, although it is known that cast Laminaria cloustoni or L. digitata, and to a lesser extent fresh Ascophyllum nodosum, are the starting materials most frequently used, and that in each case Stanford s process, or a modification thereof, is employed. 

Occurs in the brown algae Fucus vesiculo-sus, Fucus spiralis, Pelvetia canaliculata, Laminaria cloustoni and Desmarestia aculeata. 

C12H22O11 342.299 Occurs in the free state in various seaweeds, e.g. Pelvetia canaliculata, Laminaria cloustoni and Fucus spiralis. Also isol. from the partial acid hydrolysate of insoluble laminarin . Cryst. + H2O. 

Found in brown algae especially the Laminaria subgroup isol. from Laminaria cloustoni. Insol. H2O. [a]o -13.4 (c, 0.9 in H2O). 

Laminarin is the reserve carbohydrate of the sublitoral brown algae, especially Laminaria. There are two types of laminarin as regards solubility, the normal or water-insoluble laminarin (from L. cloustoni) and a soluble type (from L. digitata). These two kinds of laminarin differ only in solubility and are otherwise indistinguishable in composition and structure. They will not be further differentiated in this description. 

Kelp occurs as a dark green to olive brown, dry substance. It is the dehydrated seaweed obtained from the class Phaeo-phyceae (brown algae) of the genera Macrocystis (including M. pyrifera and related species) and Laminaria (including L. digitata, L. cloustoni, and L. saccharina). The seaweed may be chopped to provide coarse particles and/or it may be ground to provide a fine powder. 

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