Morris, Gordon, Butler, S. N. G., Foster, T. J., Jumel, K. and Harding, S. E. (1999) Elevated-temperature analytical ultracentrifugation of a low-methoxy polyuronide. Progress in Colloid and Polymer Science, 113. pp. 205-208. ISSN 0340-255X

Relatively little has been published on the ultracentrifuge behaviour of macromolecular solutions at elevated temperature (> 40°C). In this study we look at the sedimentation velocity behaviour of one particular food grade polyuronide - pectin - from 20°C to 60°C in a specially adapted Model E ultracentrifuge. Reduced specific viscosity measurements were also determined over the same temperature range. A small decrease in the reduced viscosity, together with a similar increase in s20,w, suggests that the pectin chain is more flexible at elevated temperatures, but that the overall molecular integrity remains intact. © Springer-Verlag 1999.

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