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Mobility of Sulfate Ester during Structural Determinations of Red Algal Galactans
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I. J. Miller
Published/Copyright:
June 1, 2005
Abstract
The polysaccharide from Rhodophyllis membranacea (family Cystocloniaceae) was found to be approximately 80% ι-carrageenan together with 20% of a further precursor-like entity. Alkali treatment of the initial polymer gave only ι-carrageenan. A standard methylation of this polysaccharide in NaOH/DMSO gave 95% of the product as permethylated β-carrageenan. This desulfation was avoided by removing reducing agents with bromine water, then carrying out a preliminary methylation with aqueous NaOH/dimethyl sulfate. Alkaline desulfation was investigated using ι-carrageenan under non-aqueous alkaline conditions. Desulfation was achieved in the presence of strong reducing agents and ferric oxide, and quantitatively in the presence of dithionite or aluminium.
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Published Online: 2005-06-01
Published in Print: 2002-11-19
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
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- Subject Index
- Taxonomical Index
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- Taxonomic Notes on Marine Algae from Malaysia. VII. Five Species of Rhodophyceae, with the Description of Lomentaria gracillima sp. nov.
- A Reassessment and Reclassification of Species in the Genera Onikusa Akatsuka and Suhria J. Agardh ex Endlicher (Gelidiales, Rhodophyta) Based on Molecular and Morphological Data
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- Ceramium bisporum (Ceramiaceae, Rhodophyta), a New Record for the Mediterranean Algal Flora
- Taxonomic Notes on Marine Algae from Malaysia. VIII. Three Species of Laurencia (Rhodophyceae)
- Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta)
- Macroalgal Volume: a Surrogate for Biomass in Some Green Algae
- Plant Resources of South-East Asia, No 15 (1). Cryptogams: Algae
- Acknowledgement
- Meetings
Articles in the same Issue
- Contents
- Subject Index
- Taxonomical Index
- Author Index
- Growth and Biochemical Composition of the Diatom Phaeodactylum tricornutum at Different pH and Inorganic Carbon Levels under Saturating and Subsaturating Light Regimes
- Comparative Study of the Volatile Compounds from Some Black Sea Brown Algae
- Establishment of the Exotic Species Fucus evanescens C. Ag. (Phaeophyceae) in öresund, Southern Sweden
- Contribution to the Seaweed Flora of Namibia: New Records of Rhodophyta
- Observations on Cystoseira squarrosa De Notaris (Fucophyceae, Fucales), a Rare and Little Known Mediterranean Species, and Its Typification
- Taxonomic Notes on Marine Algae from Malaysia. VII. Five Species of Rhodophyceae, with the Description of Lomentaria gracillima sp. nov.
- A Reassessment and Reclassification of Species in the Genera Onikusa Akatsuka and Suhria J. Agardh ex Endlicher (Gelidiales, Rhodophyta) Based on Molecular and Morphological Data
- Mobility of Sulfate Ester during Structural Determinations of Red Algal Galactans
- Ceramium bisporum (Ceramiaceae, Rhodophyta), a New Record for the Mediterranean Algal Flora
- Taxonomic Notes on Marine Algae from Malaysia. VIII. Three Species of Laurencia (Rhodophyceae)
- Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta)
- Macroalgal Volume: a Surrogate for Biomass in Some Green Algae
- Plant Resources of South-East Asia, No 15 (1). Cryptogams: Algae
- Acknowledgement
- Meetings
