D8821

Dextrane from Leuconostoc mesenteroides

average mol wt 60,000-76,000

• Formule linéaire : (C₆H₁₀O₅)_n
• Numéro CAS: 9004-54-0
• Numéro CE : 232-677-5
• Numéro MDL: MFCD00130935
• Code UNSPSC : 12352201
• Nomenclature NACRES : NA.25

Propriétés

• Source biologique: bacterial (Leuconostoc mesenteroides)
• Niveau de qualité: 200
• Forme: powder
• Activité optique: [α]20/D 190 to 201 °, c = 2% (w/v) in water
• Poids mol.: average mol wt 60,000-76,000
• Couleur: white to off-white
• Pf: 483 °C ((901 °F ))
• Solubilité: water: 100 mg/mL at 25 °C, colorless to faintly yellow
• Température de stockage: 2-8°C
• 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

Description

Description générale

Dextran is an extracellular bacterial polymer of D-glucopyranose. It consists of α-(1→6) linkage in the main chain with a variable amount of α-(1→2), α-(1→3), α-(1→4) branched linkages. Dextran from L. mesenteroides B512F comprises 95% of α- (1→6) linkages and 5% of α-(1→3) branch linkages. Insoluble dextran from L. mesenteroides 1299 contains 63% α-(1→6), 27% of α-(1→2) and 8% of α-(1→3) linkages.

Application

Dextran from Leuconostoc mesenteroides has been used:

• in resuspension of pellets and in Hanks′ balanced salt solution (HBSS) for the isolation of vascular nuclei from frozen post-mortem brain tissue
• to prepare dextran solution in phosphate buffer saline and to maintain corneal hydration and restore corneal thickness to physiological levels of human eyes
• as a polymer solution in the in situ aqueous two-phase systems (ATPS) formation with lysozyme PEGylation reaction

L'utilisation de dextrans comme longs bras hydrophiles améliore les performances des protéines immobilisées qui agissent sur les macromolécules.

Actions biochimiques/physiologiques

Dextran is commercially available as a drug, especially as a blood plasma volume expander. This bacterial polysaccharide has several applications, such as adjuvant, emulsifier, carrier, and stabilizer in the food, pharmaceutical, and chemical industries. Dextran is used in the thickening of jam and ice cream in the food industry. It prevents sugar crystallization and retains moisture. This helps in preserving the flavor and appearance of several food items.

Autres remarques

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

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 2