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Carbohydr Res. 1991 Sep 18;217:163-70.

Structural studies of a polysaccharide isolated from the green seaweed Chaetomorpha anteninna.

Author information

1
Department of Pharmaceutical Sciences, Andhra University, Visakhapatnam, India.

Abstract

Extraction of the green seaweed Chaetomorpha anteninna with water, followed by fractionation using the copper complex, gave a sulphated heteropolysaccharide, [alpha]D27 +84 degrees, that contained arabinose (57.7%), galactose (38.5%), rhamnose (3.8%), and sulphate (11.9%). Application of methylation analysis, periodate oxidation, and partial acid hydrolysis indicated a branched structure with 4-linked arabinose, 4- and 3-linked galactose, and 4-linked rhamnose residues. Both the arabinose and galactose residues carried branches. Desulphation and analysis of the polymeric product showed that sulphate groups were located at C-2 of some of the interior arabinose residues, C-4 of some of the non-reducing-end arabisoyl groups, and C-3 of the non-reducing-end galactosyl groups.

PMID:
1797398
DOI:
10.1016/0008-6215(91)84126-y
[Indexed for MEDLINE]

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