kappa-Carrageenan, Sigma-Aldrich®
Supplier: MerckTotal Ratings: 0
Avg. Ratings: 0.0 out of 5
Synonyms:
Irish moss
Sulphated plant polysaccharide.
Carrageenans are used to suppress immune response in vivo and in vitro via mechanisms believed to involve selective cytopathic effect on macrophages. As ι-, κ-, and λ-carrageenans have varying degress of sulphation, they may be studied comparatively for differences in protective, antiviral, and immunosuppression activities. May be used in immobilisation of microbial cells based on the growth of cell in gel.
Carrageenans are mucopolysaccharides from the cell walls of the red algae. They are anionic linear polymers composed of 1,3α-1,4β-galactans having one (κ-), two (ι-) or three (λ-) sulphates per disaccharide unit. In ionic solutions, κ- and ι-carrageenans self-associate into helical structures that form rigid or flexible gels, respectively. Carrageenans are used commercially as thickeners and stabilising agents.
Formula:
C₁₂H₁₇O₁₃S MW: 401.32 g/mol |
MDL Number:
MFCD00151514 CAS Number: 11114-20-8 EINECS: 234-350-2 |
Specification Test Results
Loss on Drying | ≤12% |
Infrared Spectrum | Conforms to Structure |
Viscosity (Rotation) | 5 - 25 mPas |
Viscosity (Conditions) | 0.3% in H₂O, 25 °C, DIN 45, 100 s⁻¹ |
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