- Title
- A structural investigation of the sulphated polysaccharide pachymenia carnos (J. Ag.) J. Ag.
- Creator
- Farrant, Annette J
- ThesisAdvisor
- Nunn, J R
- ThesisAdvisor
- Parolis, H
- Subject
- Polysaccharides Red algae -- Composition
- Date
- 1972
- Type
- Thesis
- Type
- Doctoral
- Type
- PhD
- Identifier
- vital:4470
- Identifier
- http://hdl.handle.net/10962/d1011785
- Description
- The highly sulphated, methylated polysaccharide isolated from Pachymenia Carnosa, a red seaweed, was shown to contain D- galactose, 2-o (underscore) methyl-D- galactose, 6-o (underscore) -methyl- D- galactose and 4-o (underscore)-methylgalactose. The polysaccharide was desulphated with methanolic hydrogen chloride. Methylation of the desulphated polysaccharide revealed that it was composed entirely of (1→73) and (1→4) links in approximately equal amounts. Treatment of the polysaccharide with alkali showed that the majority of the ester sulphate groups were alkali-stable. Partial hydrolysis and acetolysis studies indicated that the polysaccharide was extremely complex, and contained alternate (1→3) and β (1→4) glycosidic linkages. There is evidence for the presence of D-galactose-6-sulphate.
- Format
- 91 leaves, pdf
- Publisher
- Rhodes University, Faculty of Science, Chemistry
- Language
- English
- Rights
- Farrant, Annette J.
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Collections
RU Department of Chemistry
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