The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides

A galactomannan composed of 28.6% D-galactose and 71.4% D-mannose was isolated in 30% yield from the seeds of Gleditsia amorphoides. Periodate oxidation showed that all the mannose and galactose units were attacked since hydrolysis of the reduced oxopolysaccharide gave only glycerol (1 mole) and ery...

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Publicado: 1965
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223263_v30_n3_p924_Cerezo
http://hdl.handle.net/20.500.12110/paper_00223263_v30_n3_p924_Cerezo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00223263_v30_n3_p924_Cerezo
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spelling paper:paper_00223263_v30_n3_p924_Cerezo2023-06-08T14:49:23Z The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides A galactomannan composed of 28.6% D-galactose and 71.4% D-mannose was isolated in 30% yield from the seeds of Gleditsia amorphoides. Periodate oxidation showed that all the mannose and galactose units were attacked since hydrolysis of the reduced oxopolysaccharide gave only glycerol (1 mole) and erythritol (2.7 moles). The periodate consumption was 4.8 moles for every four hexose residues and at the same time 1 mole of formic acid was produced. Hydrolysis of the methylated polysaccharide yielded 2,3,4,6-tetra-O-methyl-D-galactose (1 mole), 2,3,6-tri-O-methyl-D-mannose (2.1 moles), and 2,3-di-O-methyl-D-mannose (1.1 moles). © 1965, American Chemical Society. All rights reserved. 1965 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223263_v30_n3_p924_Cerezo http://hdl.handle.net/20.500.12110/paper_00223263_v30_n3_p924_Cerezo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A galactomannan composed of 28.6% D-galactose and 71.4% D-mannose was isolated in 30% yield from the seeds of Gleditsia amorphoides. Periodate oxidation showed that all the mannose and galactose units were attacked since hydrolysis of the reduced oxopolysaccharide gave only glycerol (1 mole) and erythritol (2.7 moles). The periodate consumption was 4.8 moles for every four hexose residues and at the same time 1 mole of formic acid was produced. Hydrolysis of the methylated polysaccharide yielded 2,3,4,6-tetra-O-methyl-D-galactose (1 mole), 2,3,6-tri-O-methyl-D-mannose (2.1 moles), and 2,3-di-O-methyl-D-mannose (1.1 moles). © 1965, American Chemical Society. All rights reserved.
title The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides
spellingShingle The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides
title_short The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides
title_full The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides
title_fullStr The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides
title_full_unstemmed The Constitution of a Galactomannan from the Seed of Gleditsia amorphoides
title_sort constitution of a galactomannan from the seed of gleditsia amorphoides
publishDate 1965
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223263_v30_n3_p924_Cerezo
http://hdl.handle.net/20.500.12110/paper_00223263_v30_n3_p924_Cerezo
_version_ 1768542927045263360

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