Volume 19, Issue 12 pp. 2165-2175
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Structural and conformational investigation of carrageenans

Cyrille Rochas

Cyrille Rochas

Centre de Recherches sur les Macromolécules Végétales, Laboratoire Propre du C.N.R.S., Associé à l'Université Scientifique et Médicale de Grenoble, 53 X, 38041 Grenoble Cédex, France

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Marguerite Rinaudo

Marguerite Rinaudo

Centre de Recherches sur les Macromolécules Végétales, Laboratoire Propre du C.N.R.S., Associé à l'Université Scientifique et Médicale de Grenoble, 53 X, 38041 Grenoble Cédex, France

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Marc Vincendon

Marc Vincendon

Laboratoire de Chimie Organique Physique, Départment de Recherche Fondamentale, Centre d'Etudes Nucléaires, 85 X, 38041 Grenoble Cédex, France

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First published: December 1980
Citations: 58

Abstract

A detailed assignment of the 13C chemical shifts of κ- and ι-carrageenans in their Na+ and K+ forms in D2O and dimethylsulfoxide is given. Evidence of the conformational transition induced by temperature variation in the absence of any gel formation on κ-carrageenans is also presented. This evidence is based on 13C-nmr and optical rotation experiments.

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