高等学校化学学报

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万古霉素修饰磁性纳米粒子的制备及其细菌分离功能

柯诗剑, 计剑   

  1. 浙江大学高分子科学与工程系, 高分子合成与功能构造教育部重点实验室, 310027
  • 收稿日期:2006-07-05 修回日期:1900-01-01 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 计剑

Preparation and Bacterial Separation Function of Norvancomycin Hydrochloride-immobilized Magnetic Nanoparticles

KE Shi-Jian, JI Jian   

  1. Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2006-07-05 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: JI Jian

摘要: 制备了万古霉素修饰的磁性纳米粒子, 并研究了其对金黄色葡萄球菌(S.aureus)和大肠杆菌(E.coli BL21)的选择性吸附分离特性.

关键词: 磁性纳米粒子, 万古霉素, 生物缔合, 细菌分离

Abstract: APTES-bounded MNP were prepared by chemical coprecipitation, followed by coating with (γ-aminopropyl)triethoxysilane. Norvancomycin hydrochloride(Van) was then immobilized onto the amino-functionalized nanopartiles. Powder X-ray diffraction(XRD) results show the inverse spinel structure of MNP. The physics property measurement system(PPMS) indicates that the MNP are superparamagnetic. The presence of Van and APTES on the surface of MNP is confirmed by FTIR. By a separation assay of S. aureus and E. coli BL21, it is proved that MNP-APTES-Van can selectively capture S. aureus within 10 min, which can be isolated readily by applying an external magnetic field.

Key words: Magnetite nanoparticles, Vancomycin, Bioconjugate, Bacterial separation

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