For each SOM system, the diffusion of SAA correlates with that of water, with the highest diffusion coefficient observed in the SOM II system. The strong influence of water diffusion on SAA suggests that SAA molecules either spend extended periods in the water phase or remain in continuous contact with water. The elevated water diffusion in the SOM II system can be attributed to the system's more hydrophobic nature (low acidity), which promotes local phase separation and results in a more interconnected water phase , thereby facilitating higher water mobility.