This ulvan mainly consists of disaccharide A3S type: →4) β-D-Glucuronic acid (1→4) α-L-Rhamnose-3-sulfate (1→, branchs were rhamnose residues linkaged to the main chain at C-2 position.
Ulvan có disaccharide dạng A 3 S: → 4) β-D-Glucuronic acid (1 → 4) α-LRhamnose -3 - sulfate (1 →, mạch nhánh rhamnose liên kết với mạch chính ởvị trí C-2.