Web18 hours ago · Despite these sources of FCD, the FCD extracted from the Laminaria saccharina has a chemical structure that is made up of α(1 → 3)-linked L-fucopyranose units with sulfate group at C-2. However, another FCD extracted from Chorda filum has a similar chemical composition as the Laminariales but is sulfated at C-4 position (Berteau and …