Accession Number : AD0449633

Title :   ISOLATION AND SOME STRUCTURAL FEATURES OF A POLYSACCHARIDE FROM BIRCH SAP,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BIOLOGICAL SCIENC ES

Personal Author(s) : Urbas, B. ; Adams, G. A. ; Bishop, C. T.

Report Date : 29 APR 1964

Pagination or Media Count : 8

Abstract : A polysaccharide, precipitated by cetyltrimethylammonium hydroxide from the nondialyzable portion of birch xylem sap, contained D-galactose, D-mannose, and D-glucose in a molar ratio of 2:1.4:1 and small amounts of D-glucuronic acid. Periodate oxidation studies indicated that the polysaccharide was branched and contained a high proportion of periodate-resistant monosaccharides. This was confirmed by methylation and hydrolysis which yielded 2, 3, 4, 6-tetra-O-methyl-Dglucose (2.0 moles); 2, 4, 6-tri-O-methyl-Dmannose (0.9 mole); 2, 4, 6-tri-O-methyl-Dgalactose (3.8 moles); unidentified tri-O-methyl hexose (1.2 moles); and 3, 5-di-O-methyl-Dmannose (1.8 moles). (Author)

Descriptors :   *POLYSACCHARIDES, TREES, PREPARATION, TISSUE EXTRACTS, PLANTS(BOTANY), TISSUES(BIOLOGY), BIOCHEMISTRY, HYDROLYSIS, GLUCOSE, URONIC ACIDS, IMMUNOLOGY, CHEMISTRY, CHROMATOGRAPHIC ANALYSIS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE