Spectroscopic characterization and conformation of oligo kappa carrageenans |
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| Authors: | Cyrille Rochas Marguerite Rinaudo Marc Vincendon |
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| Affiliation: | Centre de Recherches sur les Macromolécules Végétales, Laboratoire Propre du CNRS, associé à l''Université Scientifique et Médicale de Grenoble, 53 X, 38041 — Grenoble cedex, France;Laboratoire de Chimie Organique Physique, Département de Recherche Fondamentale, Centre d''Etudes Nucléaires, 85 X, 38041 Grenoble cedex, France |
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| Abstract: | Identification of oligo-carrageenans by 13C n.m.r., infrared spectroscopy and optical rotation is presented. 13C n.m.r. signals have been assigned for d-galactose 4-sulphate and oligomers of kappa carrageenan on the basis of model spectra of parent polymer and deuterium isotopic effect. Optical rotation measurements give evidence of the conformational transition of such oligomers, depending on their degree of polymerizations. |
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| Keywords: | Spectroscopy kappa carrageenan oligomers conformation |
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