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OALib Journal期刊
ISSN: 2333-9721
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牛血清白蛋白分子表面印迹材料的制备及其大分子识别特性研究
DOI: 10.11777/j.issn1000-3304.2014.14139, PP. 1678-1686
Keywords: 牛血清白蛋白,丙烯酰氧乙基三甲基氯化铵,表面印迹,接枝聚合,大分子识别
Abstract:
通过分子设计和过程策划,制备了高性能的牛血清白蛋白(BSA)分子表面印迹材料.首先以甲基丙烯酰氯为试剂,使交联聚乙烯醇(CPVA)微球表面的羟基发生酯化反应,将大量可聚合双键引入到CPVA微球表面.然后以含有可聚合双键的CPVA微球为载体,阳离子单体丙烯酰氧乙基三甲基氯化铵(DAC)为功能单体,N,N'-亚甲基双丙烯酰胺(MBA)为交联剂,牛血清白蛋白(BSA)为模板分子,在水溶液体系中,基于主-客体之间的强静电相互作用,采用接枝聚合与印迹过程同步进行的方式,制备了高性能BSA分子表面印迹微球MIP-PDAC/CPVA.采用红外光谱(IR)和扫描电子显微镜(SEM)对产物微球进行了表征.研究了印迹聚合物微球MIP-PDAC/CPVA对BSA的大分子识别特性.研究结果表明,微球MIP-PDAC/CPVA对BSA具有优良的结合亲和性和特异的识别选择性,结合容量高达108mg/g,对牛血红蛋白(BHb)却基本不结合;相对于BHb,MIP-PDAC/CPVA对BSA的选择性系数高达60.2.
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