title: Molecular characterisation of kappa- and lambda-carrageenan by gel permeation chromatography, light scattering, sedimentation analysis and osmometry.
abstract: Gel permeation chromatography, in conjunction with a double detection system involving a low angle laser light scattering apparatus (LALLS) and a refractive index monitoring device (RI), has been used to obtain both the molecular weight and the molecular weight distribution of sodium salts of kappa-carrageenan and lambda-carrageenan in saline solutions. The results, Mw and Mn, are in excellent agreement with independent determinations of molar mass based on static light scattering experiments, sedimentation-diffusion analysis and osmometry. The relevance of the data is discussed with respect to current problems in carrageenan research.
authors.affiliation: Department of Physical and Macromolecular Chemistry, Gorlaeus Laboratories, University of Leiden, Netherlands.
authors.forename: D
authors.initials: D
authors.lastname: Slootmaekers
authors.forename: J A
authors.initials: JA
authors.lastname: van Dijk
authors.forename: F A
authors.initials: FA
authors.lastname: Varkevisser
authors.forename: C J
authors.initials: CJ
authors.lastname: van Treslong
authors.forename: H
authors.initials: H
authors.lastname: Reynaers
mesh_terms: D002351:Carrageenan / Q000737:chemistry*; D002850:Chromatography, Gel; D004058:Diffusion; D008970:Molecular Weight; D009997:Osmotic Pressure; D012031:Refractometry
chemical_list: D002351:Carrageenan