The decrease in the number of oily patches with the increase of solution temperature proves that oil adsorption decreases as temperature of solution increases. This may be due to leaching process that took place when temperature of the liquid solution increases. This will result in the diffusion of saponins and flavonoids constituents from the leaves surface into the surrounding solution [11]. Reduction in the amount of saponins and flavonoids constituents on the surface of the leaves reduce its oil adsorption capacity.