对RZ(Reinheitszahl)是在0.51.0毫克/毫升去离子水的吸光度比值A403/A275确定的。它是测量血红素的含量,而不是酶的活性。即使制备出高RZ值,也可能有低的酶活性。 单位定义one unit will form 1.0mg of purpurogallin from pyrogallol in 20sec at pH6.0 at 20degc. Unit Definition
One pyrogallol unit will form 1.0mg purpurogallin from pyrogallol in 20 sec at pH 6.0 at 20℃.