When the viscosity curves of the EHF and MHF pectin solutions were compared, the EHF pectin solution exhibited higher viscosity than the MHF pectin solution for all extraction methods. It is important to note that, despite the lower Mw data obtained for EHF pectin (i.e. 1.6 × 106 g/mol, water extract) compared to that for MHF pectin (i.e. 3.75 × 106 g/mol water extract), the viscosity exhibited by EHF pectin was ten times higher than that exhibited by MHF pectin. Possible explanations for the higher viscosity observed in EHF pectin are: