Fucoidans are a family of high molecular weight sulfated polysaccharides. They are widely dispersed in the cell walls of kelp.
Sulfatedfucan is extracted from a sea weed, Laminaria japonica.
The main production areas are China and Japan.
岩藻聚糖硫酸酯 提取于海帶科植物海帶（Laminaria japonica ）
light yellow powder; can be dissolved in water.
Channels (meridians) entered:
anti-tumor: fucoidans inhibit the heparinase of cancer cells and inhibits secretion of growth factors of cancer cells. These growth factors are attached to the sulfated heparin. Fucoidans also have strong attraction to some of those growth factors and prevent them to return to the combining to the cancer cells. The cancer cells that have combined with fucoidans become mal-nourished and the reproduction function of the cancer cells will become weakened and exhausted.