机构地区: 宜春学院
出 处: 《宜春学院学报》 2012年第12期41-44,共4页
摘 要: 以邻苯二酚为底物,研究了双核铜配合物模拟酪氨酸酶的活性。通过制备新鲜酪氨酸酶、β-环糊精与双核配合物的包合物、壳聚糖与双核配合物包合物,分别观察其与邻苯二酚的反应时间与吸收波长曲线。发现双核铜配合物与β-环糊精包合物溶液的吸收波长曲线与酪氨酸酶的吸收波长曲线相似,最大吸收波长也与酪氨酸酶相近,表明双核铜配合物与β-环糊精包合物具有与酪氨酸酶相似的活性,但活性较弱(酪氨酸酶的酶活是1400,双核铜配合物的酶活是200);而双核铜配合物与壳聚糖的包合物没有酪氨酸酶的活性。 The simulation of binuclear copper ( II ) complexes for the activity of tyrosinase was studied, through the preparation of the fresh tyrosinase, the two different inclusion complexes of binuclear copper ( II ) with β - cyclodextrin and chitosan, and then respective determination of their UV absorbance - time curves, with o - di- hydroxybenzene as the substrate. The result indicated that the activity of the binuclear copper ( II ) -β -cy- clodextrin) inclusion complex was similar to the tyrosinase, though its enzyme activity (200) was lower than the tyrosinase (1400) obviously. While the binuclear copper ( II ) - chitosan inclusion complex had no activity seemingly.