Abstract:
PURPOSE: A composition containing Juglans mandshurica-derived PGG(1,2,3,4,6-penta-O-galloyl-beta-D-glucose) is provided to treat and prevent inflammatory dermatitis. CONSTITUTION: A composition for treating skin inflammation and injury caused by inflammation-relating molecule(TNF-alpha, IFN-gamma, and TNF-alpha+IFN-gamma) and TPA contains Juglans mandshurica-derived PGG as an active ingredient. A method for preparing the Juglans mandshurica-derived PGG extract comprises: a step of collecting Juglans mandshurica barks, drying and pulverizing; a step of dipping in acetone-water(7:3,v/v) solution and extracting; a step of filtering the extract using Whatman No. 2 filter paper; a step of concentrating and sequentially fractioning with n-hexane, CH_2Cl_2, and EtOAc; and a step of freeze-drying.