The occurrence of methylated carbohydrates and rhamnose as components of soil polysaccharides
✍ Scribed by Robert B. Duff
- Publisher
- John Wiley and Sons
- Year
- 1952
- Tongue
- English
- Weight
- 486 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0022-5142
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✦ Synopsis
Abstract
A complex of polysaccharides and humic substances has been extracted from various soils.
Somewhat impure syrupy fractions have been obtained by partition chromatography of the hydrolysate on a cellulose column, and the methoxyl content of these fractions approximated to that required for a monomethyl hexose.
Demethylation and examination of the products on the paper chromatogram indicated that the products were hexoses, probably galactose and glucose.
A rich soil contained a total of about 0.006% of the syrupy methylated fraction. The demonstration of the presence of methylated sugars in soil indicates a wider distribution of these substances than hitherto supposed.
The soil polysaccharide hydrolysate also appeared to contain L‐rhamnose, and a rich soil contained about 0.006% of this fraction.