Molecularity of the Salt-Induced Conformational Transition of .iota.-Carrageenan

Conformational transitions of carrageenans, linear sulfated galactans from red algae, upon decreasing temperatures and/or increasing salt concentration are investigated. Static light scattering at 25 and 45 degree C was measured at angles between 30 and 100 degree . The Rayleigh ratio for benzene wa...

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Bibliographic Details
Published in:Macromolecules 1994-12, Vol.27 (25), p.7496-7498
Main Authors: Vanneste, Katrien, Mandel, Michel, Paoletti, Sergio, Reynaers, Harry
Format: Article
Language:English
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Summary:Conformational transitions of carrageenans, linear sulfated galactans from red algae, upon decreasing temperatures and/or increasing salt concentration are investigated. Static light scattering at 25 and 45 degree C was measured at angles between 30 and 100 degree . The Rayleigh ratio for benzene was taken and used at room temperature and measurements obtained at 45 degree C. All solutions were filtered, after which the cylindrical cell containing the solutions was immersed into a controlled toluene bath. The data were further analyzed according to the normal Zimm procedure. Refractive index increment determinations were carried out in conditions appropriate for light scattering experiments of ionic polysaccharides.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma00103a040