The purpose of this study was to evaluate mushroom tyrosinase inhibitory activity of Cuscuta japonica Choisy and C. australis R.Be. The experimental materials were expressed juice from their stems and flowers, both water and ethanol extracts, their se...
The purpose of this study was to evaluate mushroom tyrosinase inhibitory activity of Cuscuta japonica Choisy and C. australis R.Be. The experimental materials were expressed juice from their stems and flowers, both water and ethanol extracts, their seeds, and two kinds of commercially available cosmetic packing Wontosa and Bupjetosa (made from seeds of C. japonica.). The 50% inhibitory concentration (IC50) of C. japonica juice was 5.4 mg/ml. However, C. australis juice showed
negligible mushroom tyrosinase inhibitory activity. The IC50 of water extracted C. japonica seed was 54.0 μg/ml, water
extracted product of Wontosa 50.0 μg/ml and Bupjetosa 40 μg/ml. The IC50 of ethanol extracted C. japonica seed was 10 μg/
ml, Wontosa 10 μg/ml and Bupjetosa 20 μg/ml.