Figure 9: Constant gel layer model: measurements (dots), fitted model (continuous) and model parameters: Diffusivity ratio e=Deff/DAB; D0 constant gel diameter; R2: goodness of fit; G=Grinded KCl; U=Ungrinded KCl; NS10=Native Starch 10%; L10=Lignin 10%; L20=Lignin 20%; NS20=Native Starch 20%.