Dextran - Wikipedia
The structure of dextran produced depends not only on the family and species of the bacterium but on the strain. They are separated by fractional precipitation from protein-free extracts using ethanol .
(PDF) Dextran: Sources, Structures, and Properties - ResearchGate
2021年7月1日 · Dextran is composed of a linear chain of d-glucoses linked by α-(1→6) bonds, with possible branches of d-glucoses linked by α-(1→4), α-(1→3), or α-(1→2) bonds, which can be low (<40 ...
Dextran: Sources, Structures, and Properties - MDPI
2021年7月1日 · The characteristics of dextran depend on the LAB or enzyme of origin, which makes each dextran unique in terms of molecular structure, molecular weight, and branching, which cause variations in the viscosity and flexibility, and thermal and rheological properties.
Molecular and crystal structure of dextrans: a combined electron …
Molecular and crystal structure of dextrans: a combined electron and x-ray diffraction study. 1. The anhydrous, high-temperature polymorph. C. Guizard, H. Chanzy, and ; Anatole Sarko
Dextran - an overview | ScienceDirect Topics
Dextran is a family of polysaccharides composed primarily of α-(1 → 6) linked d-glucose backbones, the exact structure of which is determined by the bacteria producing them. Dextran has become an ideal biomaterial for many biomedical applications due to its biocompatibility, biodegradability, and the wide range of molecular weights [160] .
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Dextran - Springer
Dextran Dextran was introduced in the 1940s as a plasma-substituting agent (Gronwall and Ingelman 1944). When studying high molecular weight substances in sugar beets, a polysaccharide of uncommonly high molecular weight was …
Dextran has commercial interest because its solubility, viscosity, and thermal and rheological properties allow it to be used in food, pharmaceutical, and research areas. The aim of this review...
Dextran: Structure and Synthesis - ScienceDirect
This chapter discusses the structure and synthesis of dextran. The term “dextran” is used for a class of D-glucose polysaccharides produced by bacteria growing on a sucrose substrate. In this chapter, dextran will refer to those polysaccharides containing a backbone of D-glucose units linked predominantly α-D- (1→ 6).
Dextran Structure
Dextran is an α-D-1,6-glucose-linked glucan with side-chains 1-3 linked to the backbone units of the Dextran biopolymer. The degree of branching is approximately 5% in native (unfractionated) dextran and decreases with decreasing molecular weight. The branches are mostly 1 …
Dextran | Encyclopedia MDPI
2021年7月6日 · Dextran is an exopolysaccharide (EPS) synthesized by lactic acid bacteria (LAB) or their enzymes in the presence of sucrose. Dextran is composed of a linear chain of d-glucoses linked by α- (1→6) bonds, with possible branches of d-glucoses linked by α- (1→4), α- (1→3), or α- (1→2) bonds, which can be low (<40 kDa) or high molecular ...