Analysis of the thermal fluctuations in inclusion complexes of genistein with β-cyclodextrin derivatives

•EINS is applied to study molecular mobility of Gen/β-CDs inclusion complexes.•At ∼100 K a first anharmonic contribution, due to CH3 rotations, is observed.•At higher T a second anharmonic process occurs, due to H-bond network relaxation.•The hindered mobility of inclusion complexes is due to “host-guest” interactions.•Dynamics was connected to stability, indicating HP-β-CD as the best carrier.