The Chemical Structure of Galactans from Sarcodia montagneana and from Sarcodia flabellata
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I. J. Miller
Abstract
The polysaccharides from Sarcodia montagneana and from Sarcodia flabellata were examined by 13C NMR spectroscopy. Analysis of these spectra showed the 3-linked D-galactosyl units were mostly substituted at the 2-position by sulfate ester, and at the 4,6-position by pyruvate acetal. The 4-linked galactosyl units were almost entirely in the L-configuration, the 3-position was almost entirely substituted by sulfate ester, and a high percentage of these were substituted at the 2-position by sulfate ester. However, there was also a significant fraction of the 4-linked units with 2,3,6-trisubstitution by sulfate ester, and these units appeared to be linked to 3-linked units substituted with 2-sulfate ester and pyruvate, that is, these diads had no non-substituted hydroxyl group. A previous report that Sarcodia polysaccharides are equivalent to λ-carrageenan is wrong, but the polysaccharide is similar to the polysaccharides previously isolated from Trematocarpus species, confirming an association suggested previously on the basis of gene sequencing.
Copyright © 2003 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Seasonal Variations in the Vertical Distribution of Benthic Microalgae in the Upper Sediment of the Mdloti Estuary, South Africa
- Dinoflagellate Cysts in Recent Sediments from the Southern Coastal Waters of Korea
- Propagule Production of Eucheuma denticulatum (Burman) Collins et Harvey by Tissue Culture
- Photosynthetic Production of Ulva rotundata Bliding Estimated by Oxygen and Inorganic Carbon Exchange Measurements in the Field
- The Effects of Salinity on Dimethylsulfoniopropionate Production in the Green Alga Ulva fenestrata Postels et Ruprecht (Chlorophyta)
- Leveillea major sp. nov. (Rhodomelaceae, Rhodophyta) from the Sultanate of Oman
- Preparation and Chemical Characterization of Cell Wall Fractions Enriched in Structural Proteins from Palmaria palmata (Rhodophyta)
- Evaluation of the Structures of Polysaccharides from Two New Zealand Members of the Ceramiaceae
- Evaluation of the Structures of Polysaccharides from Two New Zealand Members of the Rhodomelaceae by 13C NMR Spectroscopy
- The Chemical Structure of Galactans from Sarcodia montagneana and from Sarcodia flabellata
- Meetings
