WHITNING COMPOSITION CONTAINING EXTRACTS OF DICTYOTA

摘要

A whitening composition containing the extract of Dictyota is provided to improve the inhibitory activity of tyrosinase in the cell and inhibitory activity of melanin formation, so that the composition is usable for the functional cosmetics. The whitening composition contains the extract of Dictyota which is prepared by washing the brown algae of Dictyota with the flowing water; drying the brown algae of Dictyota at 40 deg. C for 3 days and pulverizing it; extracting the pulverized product with 70% ethanol at room temperature for 2-3 days; filtering the extract; repeating the extracting and filtering process 2-3 times; concentrating the filtered solution under reduced pressure, and freeze-drying the concentrate to prepare the crude extract; and fractionating the crude extract with solvent having different polarity sequentially.