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22048 Sigma

κ-Carrageenan

sulfated plant polysaccharide

Synonym: Vegetable gelatin

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Properties

Related Categories Biochemicals and Reagents, Carbohydrates, Cell Biology, Fiber and Prebiotics, Functional Foods,
viscosity   5-25 mPa.s, 0.3 % in H2O(25 °C)
solubility   H2O: soluble 5 mg/mL (hot)

Description

Application

May be used in immobilization of microbial cells based on the growth of cell in gel

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 sulfation, they may be studied comparatively for differences in protective, antiviral, and immunosuppression activities.

General description

insoluble in hot concentrated salt solutions

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-) sulfates per disaccharide unit. In ionic solutions, κ- and ι-carrageenans self-associate into helical structures that form rigid or flexible gels, respectively. λ-carrageenans do not form helices and are non-gelling. Carrageenans are used commercially as thickeners and stabilizing agents.

Price and Availability


All labs need water
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
2
RTECS 
FI0703000

Documents

Certificate of Analysis

Protocols & Articles
Peer-Reviewed Papers
15

References

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