Small and large deformation behaviour of mixtures of xanthan and enzyme modified galactomannans

Abstract

Small and large deformation properties of aqueous mixtures of xanthan with enzyme modified galactomannans at low ionic strength are discussed in terms of the theory of rubber elasticity and the structure of the galactomannans. The linear deformation region of the gels is small indicating that the deformation behaviour is dominated primarily by the rigid xanthan molecule. Galactomannans with a lower galactose content have a smaller region of linear behaviour.