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Fucoidan, a special intercellular polysaccharide, which exists in the cell wall matrix, is the unique biological activity matter in brown algae.

We extract the fucoidan from the laminaria japonicia. The product, which is hydrosoluble heteropolysaccharide, mainly consists of sulfuric ester- fucose, and also have little quantities of galactose, mannose, xylose, arabinose, saccharic-aldehyded acid. So it's also called algin or fucoidan & laminaran, the major effective ingredient is α -l-fucose-4-sulfuric ester.

Fucoidan is an excellent raw material of health-foods and drug medicine. Because of natural organic sulfate radical, it has characteristic of high molecular compound containing the negative ion. Studies showed that it have many physiologically actives, such as inhibiting blood clotting, lowering the blood fats, repelling chronic renal-failure, anti-tumor, anti-virus, regenerating tissue, suppressing gastric ulcer, enhancing bodies' immunity, etc. Fucoidan is an immunomodulator which have immediate effects on macrophage and t-cell, with obvious pharmacological activities of inhibiting blood clotting and promoting fibrinolysis. Fucose or its degradative offspring can induce cancer-cells-apoptosis, so it can be used on revulsant and anticancer-drug. The generation of cytokines-growth can help all kinds of cells to grow, repair the damaged tissue and an organ or tissue functions failure. Because polysaccharides has the anticoagulant effect, which vails the patient who has hyper-blood-viscosity, it can be made to drugs and health products in counteracting or preventing the thrombosis. It also has an efficacy against lowering cholesterol levels and blood sugar levels, can overcome side effects of normal medicine. It can be used in treatment of chronic renal failure, especially in an early phase, improving the functions of renaland enhancing creatinine clearance. It also can be used as cements and reduction additives of metallic ion. For example, it can abate the absorption of pb by 70%.