Compared with previous work from Sousa et al. , the XRD spectrum obtained in this study (Figure ) closely resemble the one assigned to the EFA fraction. However, other peaks, which can instead be assigned to different suberin components such as diacids and shorter 𝜔𝜔-hydroxy fatty acids, suggest an even more heterogeneous composition of the suberin extractives, than was deducted from the FT-IR and the NMR spectra analysis. The clear amorphous halo present at 19.5° is consistent with the presence of impurities in the extractives and with the oligomer fraction identified through 1 H NMR. The broad halo is also coherent with the glass transition identified during the thermal analysis.