THE POLYSACCHARIDES OF FURCELLARIA FASTIGIATA: I. ISOLATION AND PARTIAL MERCAPTOLYSIS OF A GEL-FRACTION
- 1 January 1960
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 38 (1) , 112-118
- https://doi.org/10.1139/v60-011
Abstract
Addition of potassium chloride to an aqueous extract of the red alga Furcellariafastigiata precipitated a polysaccharide containing residues of D-galactose and 3,6-anhydro-D-galactose in the approximate ratio 1.3:1. Approximately two monomer units in five bore sulphate half-ester groups. The fraction gave a single, sharp peak in the analytical ultracentrifuge. Partial mercaptolysis afforded the crystalline diethyl mercaptals of D-galactose, 3,6-anhydro-D-galactose, and 4-O-β-D-galactopyranosyl-3,6-anhydro-D-galactose (A); the respective yields were 27%, 20%, and 42% w/w of the recovered mercaptolysate. The polysaccharide resembles κ-carregeenin.Keywords
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