κ-Carrageenan

SIGMA/22048 - sulfated plant polysaccharide

Synonym: Vegetable gelatin

CAS Number: 11114-20-8
EC Number: 234-350-2
MDL Number: MFCD00151514
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-22048-25G-F	25 g	$55.00 1/EAAdd To Favorites		Add To Favorites
45-22048-100G-F	100 g	$155.00 1/EAAdd To Favorites		Add To Favorites

biological source	plant
color	white to off-white
form	powder
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
InChI key	ZNOZWUKQPJXOIG-XSBHQQIPSA-L
Quality Level	100
solubility	H₂O: soluble 5 mg/mL (hot)
viscosity	5-25 mPa.s, 0.3 % in H₂O(25 °C)

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.
Application:	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.
General description:	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.