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This study investigates the attachment of glycyrrhizin to fabric using an X-ray photoelectron spectropho- tometer(XPS). XPS spectra analysis showed that carbon content on treated fabrics with 0.2% glycyrrhizin increased to 2.699% for silk, 2.829% for nylon, 1.505% for cotton, respectively. The results show that glycyrrhizin is absorbed on treated fabrics. The glycyrrhizin extraction method makes radix glycyrrhizae powder 10g treat the first and the second treatment with ethanol, remove impurities on 75 o C; subsequently, it is treated for 10 hours with ethanol 75% on 85 o C and lyophilizated. As the result, glycyrrhizin is extracted 1.7g in GL-I, 1.1 g in GL-II. As the result of abstracting gly- cyrrhizin with two methods, pure glycyrrhizin was abstracted 45.9% in GL-I, 74.9% in GL-II. GL-I, GL-II; in addition, gly- cyrrhizin(Japan) on TLC plate was separated in Rf 0.6. By GL-II extract method, this experiment obtained glycyrrhizin 15 g treated in a bath ratio set to 1: 100. Silk fabric was treated at 80 o C, 60 min. in, nylon fabric 10 o C, 70 min., and cotton fabric 30 o C, 80 min.; subsequently, silk, nylon, cotton fabrics showed a 99.9% antibacterial activity for Staphylococcus

The Extract of the Glycyrrhizin from Glycyrrhizae Radix and Antibacterial Activity of the Treated Fabrics