食品科学 ›› 2012, Vol. 33 ›› Issue (9): 6-10.doi: 10.7506/spkx1002-6630-201209002

• 基础研究 • 上一篇    下一篇

白藜芦醇纳米二氧化硅表面分子印迹聚合物的制备及吸附特性

段玉清1,王艳红1,张海晖1,*,张 灿1,丁 宁1,秦 宇1,闫永胜2   

  1. 1.江苏大学食品与生物工程学院 2.江苏大学化学化工学院
  • 出版日期:2012-05-15 发布日期:2012-05-07
  • 基金资助:
    国家自然科学基金项目(30270938;31000783);国家博士后基金项目(20100471379); 江苏大学学生科研项目(08A08);江苏高校优势学科建设工程资助项目(PAPD)

Preparation and Adsorption Characteristics of Resveratrol-Imprinted Polymer on Nano-Silica Surface

DUAN Yu-qing1,WANG Yan-hong1,ZHANG Hai-hui1,*,ZHANG Can1,DING Ning1,QIN Yu1,YAN Yong-sheng2   

  1. (1. School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; 2. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China)
  • Online:2012-05-15 Published:2012-05-07

摘要: 采用分子印迹技术,以反式白藜芦醇为模板分子,通过溶胶-凝胶法制备白藜芦醇纳米二氧化硅表面分子印迹聚合物(MIPs-Res),并通过静态吸附平衡实验、扫描电镜、红外光谱研究聚合物的吸附特性、结构及形貌特征。结果表明:与化学组成相同的非印迹聚合物(NIPs)相比,MIPs-Res对白藜芦醇具有较高的选择性和吸附性,该聚合物最佳吸附溶剂为氯仿-乙腈(体积比1:11),吸附温度为室温25℃,吸附平衡常数Kd1为3.42mg/L,最大表观结合量Qmax1为11.20mg/g,3h内达到吸附平衡,将该印迹聚合物用于选择性分离/富集白藜芦醇是可行的。

关键词: 纳米二氧化硅, 白藜芦醇, 分子印迹

Abstract: A resveratrol-imprinted polymer was synthesized by molecular imprinting technique by means of the sol-gel process on the surface of nano-silica using trans-resveratrol as the template molecule. The polymer (MIP-Res) was characterized by scanning electron microscopy and infrared spectroscopy. The results of static adsorption equilibrium experiments and the Scatchard analysis showed that MIP-Res had specific recognition and adsorption capacity for resveratrol molecules when compared with non-imprinted polymers (NIPs). The best solvent for MIP-Res adsorption was chloroform:acetonitrile at a volume ratio of 1:11. The optimal adsorption temperature was 25 ℃, and the adsorption equilibrium constant Kd1 was 3.42 mg/L. The apparent maximum binding capacity Qmax1 was 11.20 mg/g, and the adsorption equilibrium could be reached within 3 h. Therefore, MIP-Res can be used for selective separation or enrichment of resveratrol.

Key words: nano-silica, resveratrol, surface molecular imprinting

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