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Merck

22048

Sigma-Aldrich

κ-Carrageenan

sulfated plant polysaccharide

Synonim(y):

Vegetable gelatin

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About This Item

Numer CAS:
Numer WE:
Numer MDL:
Kod UNSPSC:
12352201
NACRES:
NA.25

pochodzenie biologiczne

plant

Postać

powder

kolor

white to off-white

lepkość

5-25 mPa.s, 0.3 % in H2O(25 °C)

rozpuszczalność

H2O: soluble 5 mg/mL (hot)

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

Klucz InChI

ZNOZWUKQPJXOIG-XSBHQQIPSA-L

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Opis ogólny

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

Zastosowanie

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

Inne uwagi

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

Kod klasy składowania

11 - Combustible Solids

Klasa zagrożenia wodnego (WGK)

WGK 2

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable


Certyfikaty analizy (CoA)

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Dokumenty związane z niedawno zakupionymi produktami zostały zamieszczone w Bibliotece dokumentów.

Odwiedź Bibliotekę dokumentów

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)
M. Wada et al.
Europ. J. Appl. Microbiol. Biotechnol., 8, 241-241 (1979)
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

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