PURPOSE: A cosmetic composition containing a suljigemi(rice wine lees) extract with a whitening effect is provided to suppress tyrosinase.CONSTITUTION: A cosmetic composition for skin whitening contains a suljigemi extract as an active ingredient, which is a byproduct of makkoli(Korean rice wine). The suljigemi extract contains 0.1-10 wt% of active ingredients. A method for preparing the suljigemi extract comprises: a step of extracting 10g of a suljigemi sample in 45 ml of dichloromethane and 45 ml of methanol at room temperature for 48 hour a step of adding distilled water and 100 ml of dichloromethane and shaking a step of adding 100 ml of hexane and strongly shaking for 10 minutes to prepare a hexane layer a step of adding 100 ml of methane and strongly shaking for 10 minutes to fraction a methane layer a step of fractioning a butanol layer and an aqueous layer and a step of concentrating the fraction by reducing the pressure.COPYRIGHT KIPO 2013
