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Abstract
An investigation on the possible effect of temperature on the conformation of the exocellular polysaccharide marginalan, produced by Pseudomonas marginalis strain HT041B, in aqueous solutions led to the observation that 30 % of the succinate groups were peeled off from the polymeric backbone when polymeric solutions were heated at 70 °C. This desuccinylation effect was investigated by means of NMR, circular dichroism and viscosity measurements. The experimental findings were compared with those obtained for a sample of chemically desuccinylated marginalan. A possible mechanism for the temperature-induced hydrolysis of succinate groups is discussed.
1. Presented at the XVIIIth International Carbohydrate Symposium, Milan, Italy, July 21-26, 1996.
Notes
1. Presented at the XVIIIth International Carbohydrate Symposium, Milan, Italy, July 21-26, 1996.