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Studies on pectins I. Light-scattering andw

✍ Scribed by Smith, Janet E. ;Stainsby, George

Publisher
Wiley (John Wiley & Sons)
Year
1977
Tongue
English
Weight
633 KB
Volume
9
Category
Article
ISSN
0007-1641

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✦ Synopsis

Abstract

An enzyme digestion technique for obtaining the scatter from pectin molecules in solution is described and evaluated. Weight average molecular weights, ~w~, calculated from the pectin scatter, are considerably higher than literature values obtained via sedimentation equilibrium experiments, but the present results are preferred. Limited comparison with a number average value, ~n~, obtained osmometrically, suggests that pectins can be extremely poly disperse with ~w~/~n~ = 11, for example. The relationship of intrinsic viscosity to molecular weight is a complex function of composition.

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