31430

Dextran

analytical standard, for GPC, Set M_p 1,000-400,000

• Linear Formula: [C₆H₁₀O₅]_n
• CAS Number: 9004-54-0
• EC Number: 232-677-5
• MDL number: MFCD00130935
• NACRES: NA.24

Properties

• grade: analytical standard; for GPC
• Quality Level: 100
• mol wt: M_p 1,000-400,000
• analyte chemical class(es): oligosaccharides
• technique(s): gel permeation chromatography (GPC): suitable
• application(s): food and beverages
• format: neat

Description

General description

Dextran is an exopolysaccharide synthesized by lactic acid bacteria from sucrose. It consists of repeating units of D-glucose with the monomers joined to each other through α-1,6 linkages. In addition, the linear D-glucose chains show branching at frequent intervals, linked by α-1,4, α-1,3, or α-1,2 linkages.

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)

Components

set contains 10 different dextran standards with 500 mg with M_p ~1,100 (Cat. No. 31416), ~4,400 (Cat. No. 31417), ~10,000 (Cat. No. 31418), ~20,000 (Cat. No. 31419), ~45,000 (Cat. No. 31420),~65,000 (Cat. No. 31421), ~125,000 (Cat. No. 31422), ~195,000 (Cat. No. 31423), ~275,000 (Cat. No. 31424), ~400,000 (Cat. No. 31425); The components can also be ordered separately under the product numbers indicated.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves