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. 2021 Jun 29;12:100826. doi: 10.1016/j.cegh.2021.100826

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© 2021 The Author

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Fig. 1 — Representation of the stereo-chemically fundamental carrageenan repeating sequence. (a) Kappa-carrageenan consisted of 4-O-Sulfato-beta-d-galactopyranosyl unit and 3,6-Anhydro-alpha- d-galactopyranosyl unit, (b) iota-carrageenan consisted 4-O-Sulfato-beta-d-galactopyranosyl unit and 3,6-Anhydro-2-0-sulfato-alpha-d-galactopyranosyl unit, (c) lambda-carrageenan consisted of 2-O-Sulfato-beta-d-galactopyranosyl unit and 2,6-Di-0-sulfato-alpha-d-galactopyranosyl unit.