K-Carrageenan - 25 Gr - Sigma
Código: 21856
K-Carrageenan Sulfated Plant Polysaccharide
Sinônimo(s):
Vegetable gelatin
Número CAS:
Número CE:
Número MDL:
Código UNSPSC:
12352201
NACRES:
NA.25
fonte biológica
plant
forma
powder
cor
white to off-white
viscosidade
5-25 mPa.s, 0.3 % in H2O(25 °C)
solubilidade
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
chave InChI
ZNOZWUKQPJXOIG-XSBHQQIPSA-L
Descrição geral
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
Aplicação
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[1][2]