The oscillatory rheology for both types of emulsions indicated that the elastic (storage, G′) modulus dominated over the viscous (loss, G″) one in the applied range of frequencies ( Fig. 4a), which corresponds to a gel state and a solid-like behavior (predominantly elastic behavior) [26]. Both G′ and G″ increased slightly with increasing frequency for both emulsions. As the frequency was increased, the value of tan δ also increased ( Fig. 4b), but G′ still dominated and the values of tan δ were always less than 1 (≈0.4) ( Fig. 4b), which confirmed the elastic behavior of these emulsions [26].