莱克多巴胺表面分子印迹材料的制备、表征及吸附性能
杨挺;吴银良;李存;赵健;陈国;吕燕
【期刊名称】《中国农业科学》 【年(卷),期】2013(046)006
【摘要】[Objective] The objective of this experiment is to prepare a molecule-imprinted
material
on
surface
of
silica
gel
for
ractopamine.[Method] Polymethylacrylic acid (PMAA) was grafted onto the surface of silica gel particles via the coupling effect of γ-methacryloxypropyl trimethoxy silane,and the grafting particle PMAA/SiO2 was prepared.Then,the molecular imprinting towards the grafted PMAA was performed with ractopamine as template molecule and ethylene glycol diglycidylether (EGDE) as crosslinking agent by using the surface-molecular imprinting technique established,and the ractopamine
molecule-imprinted
material
MIP-PMAA/SiO2
was
prepared.The morphology of MIP-PMAA/SiO2 was observed by SEM,and the chemical structure of MIP-PMAA/SiO2 was characterized by FT-IR.Static method was adopted to study the binding properties and
molecule
recognition
characters
of
MIP-PMAA/SiO2
for
ractopamine.[Result] The MIP-PMAA/SiO2 on the adsorption ability of ractopamine
was
significantly
better
than
clenbuterol
and
salbutamol.The adsorption capacity of the MIP-PMAA/SiO2 was 11.08 mg·g-1,the specificity binding capacity was 9.93 mg.g-1,and the
imprinted factor of the polymer was 9.63.The adsorption reaction reached equilibrium after 10 min,and the desorption ration of ractopamine reached 92.3％ in 5 min.[Conclusion] The experimental results
show
that
MIP-PMAA/SiO2
affinity
have and
specific
recognition
for
selectivity,excellent binding elution property
ractopamine.%[目的]制备莱克多巴胺硅胶表面分子印迹材料.[方法]以3-(异丁烯酰氧)丙基三甲氧基硅烷为媒介,将聚甲基丙烯酸(PMAA)偶合接枝到硅胶微粒表面,形成接枝微粒PMAA/SiO2;以莱克多巴胺为模板分子,乙二醇二缩水甘油醚(EGDE)为交联剂,对接枝在硅胶表面的PMAA大分子链进行分子印迹,制备莱克多巴胺表面分子印迹材料(MIP-PMAA/SiO2).采用扫描电镜观察了分子印迹材料表面,用红外光谱对分子印迹材料的化学结构进行表征.静态法研究分子印迹材料对莱克多巴胺的结合性能与分子识别特性.[结果]莱克多巴胺分子印迹材料对莱克多巴胺的吸附能力明显强于克仑特罗和沙丁胺醇,吸附量为11.08 mg.g-1,特异性吸附容量为9.93 mg.g-1,印迹指数为9.63,吸附平衡时间为10 min,洗脱5 min,解吸附率为92.3％.[结论]分子印迹材料对莱克多巴胺具有特异的识别选择性、优良的结合亲和性及洗脱性. 【总页数】7页(1256-1262)
【关键词】表面分子印迹;莱克多巴胺;表征;吸附性能 【作者】杨挺;吴银良;李存;赵健;陈国;吕燕
【作者单位】宁波市农业科学研究院,浙江宁波315040;宁波市农业科学研究院,浙江宁波315040;天津农学院,天津300384;宁波市农业科学研究院,浙江宁波315040;宁波市农业科学研究院,浙江宁波315040;宁波市农业科学研究院,浙江
宁波315040 【正文语种】中文 【中图分类】 【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_scientia-agricultura-sinica_thesis/020126263213.html 【相关文献】
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莱克多巴胺表面分子印迹材料的制备、表征及吸附性能
