Hybridity of carrageenans water- and alkali-extracted from Chondracanthus chamissoi, Mazzaella laminarioides, Sarcothalia crispata, and Sarcothalia radula |
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Authors: | Diane Jouanneau Patrick Boulenguer Jacques Mazoyer and William Helbert |
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Institution: | (1) Universit? Pierre et Marie Curie, Paris VI, CNRS, Marine plants and biomolecules, UMR 7139, Station Biologique, BP 74, 29680 Roscoff Cedex, France;(2) Cargill Texturizing Solutions, 50500 Baupte, France; |
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Abstract: | Carrageenans water- and alkali-extracted from Chondracanthus chamissoi, Mazzaella laminarioides, Sarcothalia crispata, and Sarcothalia radula were degraded by Pseudoalteromonas carrageenovora κ-carrageenase and Alteromonas fortis ι-carrageenase. The composition of the high molecular weight fraction (i.e., enzyme-resistant fraction) as well as the standard
and hybrid oligosaccharide content highlighted differences between the species-specific carrageenans in terms of composition
and distribution of the carrabiose moieties. Inspection of the distribution of μ- and ν-carrabiose, the biosynthetic precursors
of κ- and ι-carrabiose, revealed their localization in κ-carrabiose- or ι-carrabiose-rich segments, respectively. |
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