作者研究了小决明Cassia tora L.中活性成分意大利鼠李蒽醌(A)和去甲基镰刀菌丝红素葡萄糖(B)等对过亚硝酸根(ONOO~-)的清除作用及机理。将化合物A和B溶于10％乙醇,使试药浓度为8～200μmol/L。用改良的Kooy等方法,通过二氢若丹明-123(DHR-123)的氧化,检测所试化合物清除ONOO~-的活性;通过 The authors studied the scavenging effect and mechanism of active components, such as Italian rat buckwheat (A) and desmethylfungiose glucose (B), in Cassia tora L. on peroxynitrite (ONOO~-). The compounds A and B were dissolved in 10% ethanol so that the concentration of the reagent was 8-200 μmol/L. Using a modified method of Kooy et al., the activity of scavenging ONOO~- was tested by the oxidation of dihydrorhodamine-123 (DHR-123);