Overall, the assayed factors showed to act cooperatively, as indicated by the obtained interaction significances. This indicates that the effect of a determined GI (or ST) is strongly dependent on the period of storage (or applied dose, respectively). For the majority of parameters listed in Table 1, Table 2, Table 3, Table 4 and Table 5, the applied irradiation doses were not enough to avoid their decrease, probably due to the extended storage time.