| Autor: |
Falshaw, R., Furneaux, R. H., Miller, I. J. |
| Předmět: |
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| Zdroj: |
Botanica Marina; 1999, Vol. 42 Issue 5, p431-435, 5p |
| Abstrakt: |
The polysaccharide extracted from Plocamium costatum has been examined by chemical and spectroscopic techniques. Glycosyl linkage analysis of the native polysaccharide revealed a complex sulfated galactan, but the substitution and linkage pattern was not obvious, partly because the 4-linked units are nearly all 3- sulfated and a high proportion of the 3-linked units are 4-sulfated. Glycosyl linkage and 13C NMR spectro- scopic analysis of a solvolytically desulfated sample, however, confirmed a backbone structure of alternating 3-linked β-D-galactopyranosyl and 4-linked α-galactopyranosyl units as expected for a red algal galactan. The 4-linked galactosyl units, however, are present in both the D- and L-configuration in approximately equal amounts. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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