Fig. 6

Sedimentation velocity, g(s) analysis showing the sedimentation coefficient distributions for DMAE-pullulan at 0.5 mgmL⁻¹ b and the result of the addition of mucin at 0.5 mgmL⁻¹ a and α-amylase at 0.1 mgmL⁻¹ c; and the GC–MS volatile analysis from modified and unmodified pullulan and solutions upon the addition of saliva d. Rotor speed: 45,000 rpm (130,000 × g), 20.0 °C. The distributions reflect the real time migration of molecules driven by the centrifugal force. For the same type of macromolecule, i.e. DMAE-pullulan, a larger S value corresponds to a larger molecular weight