Immobilization of glucose oxidase with the blend of regenerated silk fibroin and poly(vinyl alcohol) and its application to a 1,1′- dimethylferrocene-mediating glucose sensor |
| |
| Authors: | Yongcheng Liu Xin Chen Jianghong Qian Haiying Liu Zhengzhong Shao Jiaqi Deng Tongyin Yu |
| |
| Affiliation: | (1) Department of Macromoleculor Science, Fudan University, Shanghai, 200433, People’s Republic of China;(2) Department of Chemistry, Fudan University, Shanghai, 200433, People’s Republic of China |
| |
| Abstract: | The structure and properties of the blend of regenerated silk fibroin (RSF) and poly(vinyl alcohol) (PVA) were investigated. The two polymers in the blend are in the state of phase segregation. Infrared (IR) spectra indicate that the RSF in the blend maintains its intrinsic properties, thus, ethanol treatment can transfer silk I structure of RSF to silk II structure. The water absorption property and mechanical property of the blend are improved in comparison with those of RSF. The blend maintains the major merit of RSF, that is, it can immobilize glucose oxidase on the basis of the conformational transition from silk I structure to silk II structure. The properties of the immobilized enzyme are examined. Moreover, the second generation of glucose sensor based on the immobilized enzyme is fabricated and it has a variety of advantages including easy maintenance of enzyme, simplicity of construction, fast response time and high stability. |
| |
| Keywords: | Regenerated silk fibroin PVA blend membrane sensor Immobilization of enzyme |
| 本文献已被 SpringerLink 等数据库收录！ |
|
