3.4.1. Stability Tests: EI Index, UV-Vis, Centrifugation

The emulsion stability was evaluated after 24 h by measuring the proportion of the emulsified phase content to the total volume of the homogenized mixture (EI index). Measurements details were described in [31]. In addition, 5 mL of the samples were taken immediately after homogenization, their optical density at 600 nm (OD0) was measured, and then the samples were centrifuged (10,000 RCF, 10 min) and the optical density (ODC) was measured again. Evaluation of emulsion stability after centrifugation was determined by the ratio of OD<sup>C</sup> to OD0.
