A structural investigation of the sulphated polysaccharide pachymenia carnos (J. Ag.) J. Ag.

Title: A structural investigation of the sulphated polysaccharide pachymenia carnos (J. Ag.) J. Ag.
Creator: Farrant, Annette J
Subject: Polysaccharides Red algae -- Composition
Date Issued: 1972
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
Format: pdf
Publisher: Rhodes University
Publisher: Faculty of Science, Chemistry
Language: English
Rights: Farrant, Annette J.

Collections

RU Department of Chemistry

		Thumbnail	File	Description	Size	Format
View Details Download			SOURCEPDF	PDF	4 MB	Adobe Acrobat PDF	View Details Download