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Carrageenans: Natural Polymers present in Seaweeds
Carrageenan found in red algae is a water-soluble anionic polysaccharide containing sulphated groups. Carrageenans are classified as &kappa-carrageenan, &iota-carrageenan and &lambda-carrageenan according to their different content of sulphated groups and 3,6-anhydro-D-galactose, and their different gel-formation abilities. Carageenans have characteristic properties as follows i) stabilizing proteins through a strong interaction with them and ii) changing the gel-formation ability by the addition of cationic ions. Therefore, they are used as natural thickeners and syneresis-preventing agents in the field of food engineering.1,2) The applications to imaging phantoms,3,4) superabsorbent polymers,5,6) capsules7,8) and drug delivery systems (DDS)9) have been also reported.
- 1)Carrageenan biotechnology
- 2)A. Mizote, J. Soc. Fiber Sci. Tech. (Sen'i Gakkaishi) 1996, 52, 13.
- 3)Development of a tissue-equivalent MRI phantom using carrageenan gel
- 4)Comparison evaluation of polymer gel with a water phantom
- 5)A new salt-resistant superabsorbent hydrogel based on kappa-carrageenan
- 6)Evaluation of Carrageenans as Superabsorbent Polymers
- 7)Carrageenan–oligochitosan microcapsules: optimization of the formation process
- 8)Preparation and characterization of chitosan-carrageenan hydrogel and micro particles
- 9)Marine Origin Polysaccharides in Drug Delivery Systems