Physicochemical characterization of inulin and sinistrin

✍ Scribed by Wolf-Dieter Eigner; Peter Abuja; Roland H.F. Beck; Werner Praznik

• Book ID: 102993555
• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 552 KB
• Volume: 180
• Category: Article
• ISSN: 0008-6215
• DOI: 10.1016/0008-6215(88)80066-1

✦ Synopsis

lnulin and sin&tin were investigated by low angle laser light scattering coupled with size-exclusion chromatography (s.e.c.-1.a.l.l.s.) and by dynamic light scattering (d.1.s.) in order to obtain molecular weights, molecular-weight distributions, and hydrodynamic radii. Small angle X-ray scattering (s.a.x.s.) experiments were carried out for the determination of the radii of gyration. In addition model calculations using the s.a.x.s. data provided information on the geometry of the molecules.

The results indicate a rod-like shape for inulin whereas sinistrin appears to be more spherical in aqueous solution. As the two polysaccharides do not differ significantly in molecular weight and volume, but show a distinct difference in their maximum dimensions, the branched sinistrin must be somewhat more compact than inulin.