Patent ID: 8722027

Claim:
A method for preparing and processing a Broussonetia kazinoki extract, comprising the steps of: (1) extracting Broussonetia kazinoki with solvent; (2) allowing the Broussonetia kazinoki extract resulting from step (1) to stand; (3) crystallizing the Broussonetia kazinoki extract resulting from step (2); (4) obtaining a skin whitening active ingredient from the Broussonetia kazinoki extract resulting from step (3) by HSCCC (high-speed counter current chromatography) using a two-phase solvent system wherein the skin whitening active ingredient includes kazinol C; and (5) loading the skin whitening active ingredient resulting from step (4) into a carrier wherein the carrier is a mixture of polyethyleneadipate (PEA) and polymethylmethacrylate (PMMA), and wherein the carrier is in the form of a capsule such that the active ingredient is encapsulated by the carrier.