采用紫外光谱法、荧光光谱法和循环伏安法,研究了牛血清白蛋白(BSA)与花旗松素(taxifolin)的相互作用.用荧光法和循环伏安法测得花旗松素与BSA的结合常数K分别为1.3×106和1.6×106 L/mol,结合位点数均接近1.3.花旗松素对牛血清白蛋白是静态猝灭.BSA荧光强度的降低与花旗松素浓度在一定范围内呈线性关系,其线性范围为6.00×10-7 ～2.00×l0-5 mol/L,检出限为2.00×10-7 mol/L.花旗松素氧化峰电流的下降与BSA浓度在一定范围内呈线性关系,其线性范围为7.00×10-7～1.00×10-4 mol/L,检出限为3.00×10-7 mol/L.用于合成样品中花旗松素和BSA的测定,结果满意.
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