00894
Dextran
analytical standard, for GPC, 270,000
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About This Item
Formule linéaire :
[C6H10O5]n
Numéro CAS:
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352201
Nomenclature NACRES :
NA.24
Produits recommandés
Qualité
analytical standard
for GPC
Niveau de qualité
Forme
powder or crystals
Poids mol.
Mn ~164200
Mp ~196,300
Mw ~273,000
Classe(s) chimique(s) de l'analyte
oligosaccharides
Technique(s)
gel permeation chromatography (GPC): suitable
Mw/Mn
~1.66
Application(s)
food and beverages
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
Clé InChI
FZWBNHMXJMCXLU-UHFFFAOYSA-N
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Description générale
Dextran (mol. wt. 270,000) belongs to the family of neutral polysaccharides, which are recognized as contaminants in sugar processing and other food production industries. These are composed of chains of D-glucose units connected by alpha-(1-6) linkages of varying lengths. They are found as bacterial extracellular polysaccharides and reportedly synthesized from sucrose by beneficial lactic acid bacteria, such as Leuconostoc mesenteroides and Lactobacillus brevis. They are incorporated in bakery products to improve the crumb texture, softness, and loaf volume, as stabilizers and additives in confectionery, flavor extract, icing compositions, beverages including soft drinks, milk, etc.
Application
The analytical standards can also be used as follows:
- High-performance size exclusion chromatography (HPSEC) based determination of the molecular weight of a dextran synthesized by Leuconostoc citreum B-2, isolated from a fermentation product of pineapple
- Determination of molecular weight of polysaccharides obtained from four Auricularia species by high-performance liquid chromatography using a water-soluble gel column
- Identification of molecular weight of a water-soluble polysaccharide isolated by anion exchange chromatography from the dried leaves of C. paliurus by gel permeation chromatography (GPC)
- Gel permeation chromatography (GPC) based molecular weight measurement of a dextran produced by two strains of Leuconostoc mesenteroides
- Estimation of molecular weight of a water-soluble polysaccharide obtained from thinned-young apple by high-performance size exclusion chromatography (HPSEC)
Conditionnement
Bottomless glass bottle. Contents are inside inserted fused cone.
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 2
Équipement de protection individuelle
Eyeshields, Gloves, type N95 (US)
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