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About This Item
Linear Formula:
[C6H10O5]n
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352201
NACRES:
NA.24
Recommended Products
grade
analytical standard
for GPC
Quality Level
form
powder or crystals
mol wt
Mn ~164200
Mp ~196,300
Mw ~273,000
analyte chemical class(es)
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
InChI key
FZWBNHMXJMCXLU-UHFFFAOYSA-N
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General description
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)
Packaging
Bottomless glass bottle. Contents are inside inserted fused cone.
Storage Class Code
11 - Combustible Solids
WGK
WGK 2
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Related Content
Dextrans are polysaccharides with molecular weights ≥1,000 Dalton, featuring a linear backbone of α-linked d-glucopyranosyl repeating units.
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