With SBSE/HSSE, the transfer of buckwheat aroma compounds to the coating was very poor, either from headspace (HSSE) or from suspension (SBSE). As can be seen from Table 3, the same compounds have been identified as with SPME, except for tetrahydrofuran, but the peak areas in the chromatogram were significantly lower even after a prolonged exposure time of up to a few hours. As was seen already with SPME, the PDMS phase is not suitable for these compounds.