The incorporation of gallic SNDX-275 aqueous solutions into the lipid blends resulted in increased viscosity values, which were significantly higher (p ≤ 0.05) in formulations with the highest W/O ratio (30/70). Water phase proportion in emulsions had higher influence on flow behavior than composition of lipid blend. This can be observed from results presented in Fig. 2, in which flow curves of emulsions and lipid blends are clearly divided into three groups: the first one is composed by the lipid blends and presented the smallest slopes of the three groups; the intermediate group is composed by emulsions formulated with different lipid blends but the same W/O ratio (20/80); and the last group is the one with the highest slopes, in which emulsions were composed of different lipid blends and the same W/O ratio (30/70).
3.3. Characterization of lipid microparticles containing gallic acid
3.3.1. Encapsulation efficiency (EE)
The increase of the W/O ratio in emulsions formulations has not affected significantly (p ≤ 0.05) gallic acid superficial concentration on microparticles. On the other hand, these values were lower in most of the formulations with higher concentrations of FHSO, as shown in Table 2.
3.3. Characterization of lipid microparticles containing gallic acid
3.3.1. Encapsulation efficiency (EE)
The increase of the W/O ratio in emulsions formulations has not affected significantly (p ≤ 0.05) gallic acid superficial concentration on microparticles. On the other hand, these values were lower in most of the formulations with higher concentrations of FHSO, as shown in Table 2.