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对Cu(Ⅱ)一姜黄素以1:1(络合物1)和1:2(络合物2)两种不同化学计量关系形成的络合物进行了清除自由基和抗氧化活性对比实验,以了解化学计量关系与结构的改变对它们抗氧化活性的影响。1)用EPR光谱分析溶于J:DMSO中的络合物1和2,结果证实这两种络合物的结构分别为扭曲的斜方型和对称的正方平面型。而前者的结构具有更高的SOD活性。2)通过细胞色素C(Fe~(2+))吸收法研究2个
Comparison of scavenging free radicals and antioxidative activity of Cu(II)-curcumin complexes formed by 1:1 (complex 1) and 1:2 (complex 2) stoichiometry To understand the effect of changes in stoichiometry and structure on their antioxidant activity. 1) EPR spectra were used to analyze the complexes 1 and 2 dissolved in J:DMSO. The results confirmed that the structures of the two complexes were distorted orthorhombic and symmetrical square planar. The former has a higher SOD activity. 2) Two studies on cytochrome C (Fe~(2+)) absorption