【摘要】 抗坏血酸被分子氧氧化,产生超氧负离子的反应机制,可用超氧化物岐化酶(SOD)进行研究。为了加速反应,分别选用了Cu(Ⅱ),EDTA-Cu(Ⅱ)和Cu(Ⅱ)一甘氨酸络合物三种不同类型的催化剂,催化抗坏血酸的氧化,再分别用活性SOD酶及变性的SOD酶研究其阻化作用,不同催化剂其所得结果不同,并对其反应机制进行了讨论。更多还原

【Abstract】 The oxidation of ascorbic acid by molecular oxygen was investigated by optical methods in the presence of various types of copper catalysts, such as Cu (Ⅱ), EDTA-Cu(Ⅱ) and Glycine-Cu(Ⅱ). The addition of SOD inhibits the rate of oxidation. In the addition of activated SOD or deactivated SOD, their effects were different from the addition of catalysts. A reaction mechanism is proposed.更多还原