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Merck
CN

22048

κ-Carrageenan

sulfated plant polysaccharide

Synonym(s):

Vegetable gelatin

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About This Item

CAS Number:
11114-20-8
UNSPSC Code:
12352201
NACRES:
NA.25
EC Number:
234-350-2
MDL number:
MFCD00151514

Key Documents

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Product Name

κ-Carrageenan, sulfated plant polysaccharide

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)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)O)CO

InChI key

ZNOZWUKQPJXOIG-XSBHQQIPSA-L

InChI

1S/C24H38O25S2/c25-1-5-14(48-50(33,34)35)9(27)10(28)22(42-5)45-16-8-4-40-19(16)12(30)23(44-8)47-20-13(31)24(43-6(2-26)17(20)49-51(36,37)38)46-15-7-3-39-18(15)11(29)21(32)41-7/h5-32H,1-4H2,(H,33,34,35)(H,36,37,38)/p-2/t5-,6-,7-,8-,9-,10-,11-,12-,13-,14+,15+,16+,17+,18-,19-,20-,21+,22+,23-,24+/m1/s1

biological source

plant

form

powder

color

white to off-white

viscosity

5-25 mPa.s, 0.3 % in H2O(25 °C)

solubility

H2O: soluble 5 mg/mL (hot)

Quality Level

100

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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 degress of sulfation, they may be studied comparatively for differences in protective, antiviral, and immunosuppression activities.
May be used in immobilization of microbial cells based on the growth of cell in gel

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.
insoluble in hot concentrated salt solutions

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.

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

植物油/植物胶产品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCN2798
BCCL8249
BCCK6082
BCCJ0930
BCCG5814

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Manuel López-López et al.
Pharmaceutics, 11(2) (2019-02-02)
In this work, poly(lactic-co-glycolic acid) (PLGA) and chitosan (CS) nanoparticles were synthesized with the purpose of encapsulating levofloxacin (LEV). A thorough study has been carried out in order to optimize the preparation of LEV-loaded polymeric nanoparticles (NPs) suitable for parenteral
A L Ellis et al.
Journal of colloid and interface science, 538, 165-173 (2018-12-05)
Polysaccharides such as kappa carrageenan are often utilised in fat replacement techniques in the food industry. However, the structural role they can provide within a product is limited by their hydrophilic nature. Hydrophilic particles can be surface-activated by hydrophobic modification
M. Wada et al.
Europ. J. Appl. Microbiol. Biotechnol., 8, 241-241 (1979)
Bakti B Sedayu et al.
Polymers, 12(5) (2020-05-21)
Carrageenans obtained from seaweeds can be processed into films for a range of applications including food packaging. The level of carrageenan refinement during extraction can influence the key properties, with semi-refined carrageenan (SRC) containing more impurities than the more refined
Immobilization of cells in carrageenan.
I Chibata et al.
Methods in enzymology, 135, 189-198 (1987-01-01)
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