31419
Dextrana
analytical standard, for GPC, Mw 25,000
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About This Item
Fórmula linear:
(C6H10O5)n
Número CAS:
Número CE:
Número MDL:
Código UNSPSC:
12352201
NACRES:
NA.24
Produtos recomendados
grau
analytical standard
for GPC
Nível de qualidade
peso molecular
Mn ~20,000
Mp ~20,000
Mw ~25,000
classe(s) química(is) do analito
oligosaccharides
técnica(s)
gel permeation chromatography (GPC): suitable
Mw/Mn
~1.25
aplicação(ões)
food and beverages
formato
neat
InChI
1S/C18H32O16/c19-1-5(21)9(23)10(24)6(22)3-31-17-16(30)14(28)12(26)8(34-17)4-32-18-15(29)13(27)11(25)7(2-20)33-18/h1,5-18,20-30H,2-4H2
chave InChI
FZWBNHMXJMCXLU-UHFFFAOYSA-N
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Descrição geral
Dextran is a D-glucosyl homopolysaccharide which has a-1,6 glucosidic linkages with different branches through α-1,2, α-1,3, and α-1,4 linkages correspondingly classified as group A, B and C. It can be synthesized from sucrose by cell-free filtrate.
Dextrans are polysaccharides with molecular weights ≥1,000 Dalton, with a linear backbone of α-linked D-glucopyranosyl repeating units. Dextrans are found as bacterial extracellular polysaccharides. They are synthesized from sucrose by Leuconostoc mesenteroides and Lactobacillus brevis. Bacteria employ dextran in biofilm formation or as a protective coating to evade host phagocytes in the case of pathogenic bacteria.
Dextran from Leuconostoc mesenteroides (Mw: 25,000) may be used as an analytical standard to calibrate the column for gel permeation chromatography (GPC).
Dextran from Leuconostoc mesenteroides (Mw: 25,000) may be used as an analytical standard to calibrate the column for gel permeation chromatography (GPC).
Aplicação
Markers-dextran with 25000 Da has been used as standard in gel chromatography analysis to determine fractional composition of protein, carbohydrate, phenolic surface active substances in base wine.
O uso de dextranas como braços espaçadores longos e hidrofílicos melhora o desempenho das proteínas imobilizadas que agem sobre macromoléculas.
Código de classe de armazenamento
11 - Combustible Solids
Classe de risco de água (WGK)
WGK 2
Ponto de fulgor (°F)
Not applicable
Ponto de fulgor (°C)
Not applicable
Equipamento de proteção individual
Eyeshields, Gloves, type N95 (US)
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