TYROSINASE ACTIVITY INHIBITOR AND LIPOXYGENASE ACTIVITY INHIBITOR DERIVED FROM ALPINIA SPECIOSA

摘要

PROBLEM TO BE SOLVED: To provide a tyrosinase activity inhibitor and/or a lipoxygenase activity inhibitor derived from a natural plant Alpinia speciosa and having high safety and to provide a medicine, a cosmetic or a food preserving agent as uses thereof.;SOLUTION: The tyrosinase or/and lipoxygenase activity inhibitors comprise an extract from the Alpinia speciosa, especially an extract from a rhizome of the Alpinia speciosa as an active ingredient. An external preparation for skin and the cosmetic are obtained by formulating the inhibitors. A therapeutic agent for inflammatory diseases is prepared by formulating the inhibitor having lipoxygenase activity inhibitory actions. The food preserving agent is obtained by formulating the inhibitors having the tyrosinase or/and lipoxygenase activity inhibitory actions.;COPYRIGHT: (C)2008,JPO&INPIT