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- Title
Rheological Behavior and Non-enzymatic Degradation of a Sulfated Galactan from Halymenia durvillei (Halymeniales, Rhodophyta).
- Authors
Fenoradosoa, Taratra; Laroche, Céline; Delattre, Cedric; Dulong, Virginie; Cerf, Didier; Picton, Luc; Michaud, Philippe
- Abstract
The rheological behavior of a sulfated galactan extracted from Halymenia durvillei, a red seaweed collected in the coastal waters of a small island of Madagascar (Nosy-be in Indian Ocean), was investigated in dilute and semi-dilute solutions. In dilute solution with NaCl at 0.3 M, the polysaccharide adopted a coil conformation whereas, at higher concentrations, the polymer had the behavior of shear-thinning fluid, typical of polymer with high molar mass or semi-rigid conformation. Degradations of this lambda carrageenan-like, using radical depolymerization, and high-pressure homogenization led to several samples of various and controlled molar masses. The measure of their intrinsic viscosities permitted the determination of the relationship of Mark-Houwink-Sakurada.
- Subjects
MADAGASCAR; HALYMENIA; CRYPTONEMIACEAE; VISCOSIMETERS; RED algae
- Publication
Applied Biochemistry & Biotechnology, 2012, Vol 167, Issue 5, p1303
- ISSN
0273-2289
- Publication type
Article
- DOI
10.1007/s12010-012-9605-z