earticle

영어

To make more functional scoria powder into cosmetic material, studies on the supercritical impregnation of α-tocopherol into Jeju scoria were made. Supercritical carbon dioxide is non-toxic and more penetrative than organic solvent and easy to remove. Experiment was composed of three steps, sterilization of scoria powder, supercritical impregnation of α-tocopherol into
scoria and HPLC analysis of impregnated scoria. The supercritical impregnation was performed at pressure 400bar and temperature 60℃. The amount of equilibrium impregnation increased with solubility of α-tocopherol in supercritical carbon dioxide. Analysis of impregnated α-tocopherol was HPLC. analysis condition was acetonitrile:methanol (75:25) 1.5ml/min at UV 220nm.