In this study, we aimed to develop a 20(S)-protopanaxadiol (PPD)-loaded self-nanoemulsifying\ndrug delivery system (SNEDDS) preconcentrate (PSP) using comprehensive ternary phase diagrams for\nenhanced solubility, physical stability, dissolution, and bioavailability. Capmul MCM C8 and Capryol\n90 were selected as the oil phase owing to the high solubility of PPD in these vehicles (>15%, w/w).\nNovel comprehensive ternary phase diagrams composed of selected oil, surfactant, and PPD were\nconstructed, and the solubility of PPD and particle size of vehicle was indicated on them for\nthe effective determination of PSP. PSPs were confirmed via particle size distribution, physical\nstability, and scanning electron microscope (SEM) with the dispersion of water. The optimized PSP\n(CAPRYOL90/Kolliphor EL/PPD = 54/36/10, weight%) obtained from the six possible comprehensive\nternary phase diagrams showed a uniform nanoemulsion with the particle size of 125.07..................
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