The effe cts of three common white-making ingredients, which are Hydroquinone, Arbutin extract and Kojic acid, on tyrposinase were detected with L-Tyrosine as substrat e in vitro.

• 用L-酪氨酸酶作底物,体外测定了三种常用美白剂(对苯二酚、熊果苷、曲酸)对酪氨酸酶活性的影响。