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C1138

ι-Carrageenan

Name: ι-Carrageenan
Brand: SIGMA

Predominantly iota carrageenan

Synonym(s):

Vegetable gelatin

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About This Item

CAS Number:

9062-07-1

UNSPSC Code:

12352201

NACRES:

NA.25

EC Number:

232-949-3

MDL number:

MFCD00151512

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Properties

biological source

algae (Eucheuma spinosum)

Quality Segment

200

form

powder

color

beige

useful pH range

8.0 - 10.5

solubility

water: soluble ~5 g/L

storage temp.

room temp

SMILES string

[S](=O)(=O)([O-])O[C@H]1[C@H](O[C@H]([C@@H]([C@H]1O[C@H]4O[C@H]5[C@@H]([C@H](OC5)[C@H]4O[S](=O)(=O)[O-])O[C@@H]6O[C@@H]([C@@H]([C@@H]([C@H]6O)O)O[S](=O)(=O)[O-])CO)O)O[C@@H]2[C@@H]3OC[C@H]2O[C@@H]([C@@H]3O[S](=O)(=O)[O-])O)CO

InChI

1S/C24H38O31S4/c25-1-5-12(52-56(31,32)33)9(27)10(28)22(46-5)49-14-8-4-44-18(14)20(55-59(40,41)42)24(48-8)51-16-11(29)23(47-6(2-26)15(16)53-57(34,35)36)50-13-7-3-43-17(13)19(21(30)45-7)54-58(37,38)39/h5-30H,1-4H2,(H,31,32,33)(H,34,35,36)(H,37,38,39)(H,40,41,42)/p-4/t5-,6-,7-,8-,9-,10-,11-,12+,13+,14+,15+,16-,17+,18+,19-,20-,21+,22+,23+,24-/m1/s1

InChI key

QIDSWKFAPCTSKL-RRQHLKGPSA-J

Description

General description

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.

Application

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 degrees of sulfation, they may be studied comparatively for differences in protective, antiviral, and immunosuppression activities. ι-Carrageenan may be used to help define the role of carrageenan sulfation levels in physicochemical, biochemical, biological and pharmacological responses.

Preparation Note

Blended from various seaweeds to produce flexible gels.

Other Notes

To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

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Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c