Structural characterization of laminaran and galactofucan extracted from the brown seaweed Saccharina longicruris

Proposed structure of galactofucan extracted from the brown seaweed Saccharina longicruris: (A) 3-linked fucopyranose 4-sulfate, (B) 3-linked fucopyranose, (C) 6-linked galactopyranose 3-sulfate, (D) 6-linked galactopyranose and (E) 4,6-linked galactopyranose.