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Structural studies of CV-70 polysaccharide

A Scamparini¹, D Mariuzzo, H Fujihara

¹State University of Campinas, Food Engineering Faculty, Food Science Department, S.P. Brazil.

International Journal of Biological Macromolecules

|August 1, 1997

Summary

Researchers characterized the chemical structure of the CV-70 polysaccharide from Beijerinckia sp. bacteria. The study identified glucose, galactose, and fucose as its main sugar components.

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Area of Science:

Microbiology
Carbohydrate Chemistry

Background:

Beijerinckia sp. are Gram-negative, aerobic bacteria often found in association with sugar cane.
Water-soluble polysaccharides produced by microorganisms can have diverse applications.

Purpose of the Study:

To elucidate the chemical structure of the CV-70 polysaccharide.
To identify the constituent monosaccharides and their linkages in CV-70.

Main Methods:

Fermentation of Beijerinckia sp. to produce CV-70.
Hydrolysis, purification, and High-Performance Liquid Chromatography (HPLC) analysis.
Gas Chromatography-Mass Spectrometry (GC-MS) after derivatization (methylation and acetylation).
Periodate oxidation and Carbon-13 Nuclear Magnetic Resonance (NMR) spectroscopy.

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Main Results:

CV-70 is composed of glucose, galactose, and fucose.
The ratio of these monosaccharides in CV-70 was determined to be 3:1:3.
Glucosidic linkages were investigated using periodate oxidation and NMR data.

Conclusions:

The chemical structure of the Beijerinckia sp. CV-70 polysaccharide has been characterized.
The primary components are glucose, galactose, and fucose in a specific molar ratio.
Further structural details regarding linkages can be inferred from the applied methods.