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Hydrodynamic properties of oxidized extracellular polysaccharides from Erwinia chrysanthemi spp.
Carbohydr Res. 2003 Nov 14; 338(23):2763-71.CR

Abstract

The molecular weights of the native polysaccharides of Erwinia chrysanthemi strains range from 1.8 to 7.1 x 10(6) and their hydrodynamic properties are those of polydisperse, polyanionic biopolymers with pseudoplastic, non-thixotropic flow characteristics in aqueous solutions. The effect on the hydrodynamic properties of the polysaccharides by adding carboxyl groups to increase the charge density is studied, with particular reference to their molecular weight (MW), viscosity and conformation. In general, it is found that periodate oxidation of the extracellular polysaccharides of E. chrysanthemi strains, Ech9Sm6 and Ech6S+, introduces little change in the hydrodynamic properties of the resulting polyaldehydes. However, bromine oxidation at neutral pH of the polyaldehydes results in polycarboxylate biopolymers that show significant reduction in MW and viscosity, but they are still characteristic polyanions.

Authors+Show Affiliations

Department of Biochemistry, College of Medicine, University of Iowa, Iowa City, IA 52242, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

14670735

Citation

Yang, Byung Yun, et al. "Hydrodynamic Properties of Oxidized Extracellular Polysaccharides From Erwinia Chrysanthemi Spp." Carbohydrate Research, vol. 338, no. 23, 2003, pp. 2763-71.
Yang BY, Ding Q, Montgomery R. Hydrodynamic properties of oxidized extracellular polysaccharides from Erwinia chrysanthemi spp. Carbohydr Res. 2003;338(23):2763-71.
Yang, B. Y., Ding, Q., & Montgomery, R. (2003). Hydrodynamic properties of oxidized extracellular polysaccharides from Erwinia chrysanthemi spp. Carbohydrate Research, 338(23), 2763-71.
Yang BY, Ding Q, Montgomery R. Hydrodynamic Properties of Oxidized Extracellular Polysaccharides From Erwinia Chrysanthemi Spp. Carbohydr Res. 2003 Nov 14;338(23):2763-71. PubMed PMID: 14670735.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hydrodynamic properties of oxidized extracellular polysaccharides from Erwinia chrysanthemi spp. AU - Yang,Byung Yun, AU - Ding,Qiong, AU - Montgomery,Rex, PY - 2003/12/13/pubmed PY - 2004/7/13/medline PY - 2003/12/13/entrez SP - 2763 EP - 71 JF - Carbohydrate research JO - Carbohydr Res VL - 338 IS - 23 N2 - The molecular weights of the native polysaccharides of Erwinia chrysanthemi strains range from 1.8 to 7.1 x 10(6) and their hydrodynamic properties are those of polydisperse, polyanionic biopolymers with pseudoplastic, non-thixotropic flow characteristics in aqueous solutions. The effect on the hydrodynamic properties of the polysaccharides by adding carboxyl groups to increase the charge density is studied, with particular reference to their molecular weight (MW), viscosity and conformation. In general, it is found that periodate oxidation of the extracellular polysaccharides of E. chrysanthemi strains, Ech9Sm6 and Ech6S+, introduces little change in the hydrodynamic properties of the resulting polyaldehydes. However, bromine oxidation at neutral pH of the polyaldehydes results in polycarboxylate biopolymers that show significant reduction in MW and viscosity, but they are still characteristic polyanions. SN - 0008-6215 UR - https://www.unboundmedicine.com/medline/citation/14670735/Hydrodynamic_properties_of_oxidized_extracellular_polysaccharides_from_Erwinia_chrysanthemi_spp_ DB - PRIME DP - Unbound Medicine ER -