SCREENING THE PHYSICAL-PROPERTIES OF NOVEL PSEUDOMONAS EXOPOLYSACCHARIDES BY HPSEC WITH MULTI-ANGLE LIGHT-SCATTERING AND VISCOSITY DETECTION

Citation
Ml. Fishman et al., SCREENING THE PHYSICAL-PROPERTIES OF NOVEL PSEUDOMONAS EXOPOLYSACCHARIDES BY HPSEC WITH MULTI-ANGLE LIGHT-SCATTERING AND VISCOSITY DETECTION, Carbohydrate polymers, 32(3-4), 1997, pp. 213-221
Citations number
15
Categorie Soggetti
Chemistry Inorganic & Nuclear","Polymer Sciences
Journal title
ISSN journal
01448617
Volume
32
Issue
3-4
Year of publication
1997
Pages
213 - 221
Database
ISI
SICI code
0144-8617(1997)32:3-4<213:STPONP>2.0.ZU;2-M
Abstract
The physical properties of three novel acidic exopolysaccharides obtai ned from P. marginalis types A, B and C, one from P. 'gingeri', one fr om P. andropogenis and one from P. fluorescens have been partially cha racterized. These EPSs were chromatographed on three serially placed S E Sheder OH pak columns covering a molar mass range for pullulans from about 4x10(7) to 1x10(3). The mobile phase was 0.05 M NaNO3. Physical measurements were performed on about 30 mg of sample for each EPS. Th e weight average molar mass of these EPSs ranged from about 0.71 to 2. 85x10(6), the weight average intrinsic viscosity from 7.15 to 35.3 dl/ g and the radius of gyration from 62 to 123 nm. The polydispersities o f these EPSs ranged from 1.01 to 1.37. The large molar mass, size and viscosities of these EPSs may indicate that they have potential for us e as thickeners, stabilizers, emulsifiers, and gelling agents in the f ood and non-food industries.