Alginates are from brown seaweeds, which are linear copolymers of MnA, β-1,4-D-mannuronic acid, and GlcA, α-1,4-L-guluronic acid. It exists as polyMnA, polyGlcA, or polyMnA−GlcA blocks.
References
Li, Jin, et al. "Insights into Algal Polysaccharides: A Review of Their Structure, Depolymerases, and Metabolic Pathways." Journal of Agricultural and Food Chemistry 70.6 (2022): 1749-1765. Click here to redirect detail information.