Collect. Czech. Chem. Commun. 1979, 44, 167-173

Effect of polymerization degree of oligogalacturonates and D-galacturonans on their circular dichroic spectra

Slavomír Bystrický, Rudolf Kohn and Tibor Sticzay

Institute of Chemistry, Slovak Academy of Sciences, 809 33 Bratislava


The CD spectra of aqueous solutions of homopolymeric sodium oligogalacturonates and D-galacturonans of polymerization degree n = 1-64, as well as lower calcium oligogalacturonates (n = 1-5) were measured. Chiroptic properties were correlated with the polymerization degree in terms of optical superposition of monomeric unit increments. Interpretation of obtained data, respecting further physicochemical properties entitles to conclude that the conformation of macromolecules of D-galacturonan in solution is close to helical structure.