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曙红Y在牛血清白蛋白表面上的Langmuir吸附反应研究
引用本文:彭毛,祁红林,吴辉,盛立娇,周建刚,宋功武.曙红Y在牛血清白蛋白表面上的Langmuir吸附反应研究[J].湖北大学学报(自然科学版),2010,32(1):84-87.
作者姓名:彭毛  祁红林  吴辉  盛立娇  周建刚  宋功武
作者单位:湖北大学,化学化工学院,湖北,武汉,430062 
摘    要:应用微相吸附-光谱修正技术研究了曙红Y(EY)与牛血清白蛋白(BSA)的相互作用,并讨论了反应时间、离子强度、温度,以及金属离子干扰等因素对该作用产生的影响.结果表明,EY与BSA间的作用符合Langmuir单分子层吸附,结合产物最大结合数NEY∶NBSA=5∶1;计算了不同温度下(30,45和60℃)反应的结合常数K,发现K随温度的升高而减小;并测定了蛋白质的工作曲线,该方法的检出限为20 mg/L.

关 键 词:微相吸附-光谱修正技术  牛血清白蛋白  曙红Y  Langmuir吸收

Langmuir aggregation of Eosin Y in protein macromolecule
PENG Mao,QI Honglin,WU Hui,SHENG Lijiao,ZHOU Jiangang,SONG Gongwu.Langmuir aggregation of Eosin Y in protein macromolecule[J].Journal of Hubei University(Natural Science Edition),2010,32(1):84-87.
Authors:PENG Mao  QI Honglin  WU Hui  SHENG Lijiao  ZHOU Jiangang  SONG Gongwu
Institution:(School of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,China)
Abstract:The interaction between Eosin Y(EY) and bovine serum albumin(BSA) has been investigated by microphase adsorption-spectral correction(MPASC) technique.EY could be absorbed on the protein by electrostatic force and the aggregation obeyed the Langmuir isothem.Results showed that the adsorption ration(N) of EY to BSA was about 5∶ 1,the adsorption constant(K) was 2.34×10^5(30 ℃),and the value of K decreased when the temperature increased.We also disscussed the effect of ionic strength and metal ions on the interaction in this paper.
Keywords:microphase adsorption-spectral correction technique(MPASC)  bovine serum albumin(BSA)  Eosin Y(EY)
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