Below this value, the rates of deteriorative reactions, with the exception of the oxidation of unsaturated fats, are mini mal. Therefore, at a given temperature, the safest water activity vel is that corresponding to Mo or lower (Goula et al., 2008). The safest aw values corresponded to Mo of samples with and with out glycerol, were obtained from the data presented in Table 4 and are tabulated in Table 6.