The system of low-molecular-weight carrageenans and agaroids from the room-temperature-extracted fraction of Kappaphyeus alvarezii
The room-temperature-extracted fraction from the red seaweed Kappaphycus alvarezii consists mainly of low-molecular-weight carrageenans, with structural dispersion around a basic κ-pattern. This dispersion results from: (a) low percentages of 3,6-anhydrogalactose and the presence of precursor units;...
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| Autores principales: | , , |
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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00086215_v325_n4_p287_Estevez |
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| Sumario: | The room-temperature-extracted fraction from the red seaweed Kappaphycus alvarezii consists mainly of low-molecular-weight carrageenans, with structural dispersion around a basic κ-pattern. This dispersion results from: (a) low percentages of 3,6-anhydrogalactose and the presence of precursor units; (b) important quantities of 6-Ο-methyl β-D-galactose (4-sulfate) residues; (c) significant amounts of i-repeating structure, and (d) small amounts of non-sulfated and disulfated β-D-galactose residues. Significant quantities of β-L-galactose units suggest the presence of agaroids, as it has been reported in several other carrageenophytes. © 2000 Elsevier Science Ltd. All rights reserved. |
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