Influence of crystallisation conditions on the large deformation rheology of inulin gels

摘要

The large-deformation rheology of inulin gels was investigated and interpreted in terms of solubility, crystallisation, and aggregation data. The gels are characterised by a strong overshoot peak in the stress-strain curve, characteristic for (non-plastic) work softening behaviour. More concentrated inulin gels tend to be firmer but are also less plastic. It is hypothesised that inulin molecules depositing during the later stages of the crystallisation/gelation process contribute most to the overshoot peak in the stress-strain curve.